diff --git a/Makefile b/Makefile
index 8b30d43..12a85ce 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Autogenerated at 22.11.2024 09:40 using ./gen-makefile
+# Autogenerated at 29.11.2024 16:47 using ./gen-makefile
 .DEFAULT_GOAL := help
 
 #===============================================
@@ -129,7 +129,7 @@ papirus:
 pgsql:
 	@./install/pgsql
 
-##php: Install php v8.1 + ppa
+##php: Install php v8.3 + ppa
 php:
 	@./install/php
 
@@ -173,7 +173,7 @@ rustdesk:
 snap:
 	@./install/snap
 
-##sublimetext: Install Sublime Text (build 4169)
+##sublimetext: Install Sublime Text
 sublimetext:
 	@./install/sublimetext
 
@@ -262,6 +262,18 @@ phpstack: php phptools
 /apache2:
 	@./uninstall/apache2
 
+##/canon-mg2500: Uninstall Canon Pixma MG2500 + ppa
+/canon-mg2500:
+	@./uninstall/canon-mg2500
+
+##/chrome: Uninstall google chrome
+/chrome:
+	@./uninstall/chrome
+
+##/composer: Uninstall composer
+/composer:
+	@./uninstall/composer
+
 ##/docker: Uninstall docker + ppa
 /docker:
 	@./uninstall/docker
diff --git a/README.md b/README.md
index e884355..d290b53 100644
--- a/README.md
+++ b/README.md
@@ -1,46 +1,28 @@
-# My Ubuntu environment
+# My shell environment
 
-`make`-ready bunch of scripts for easily installation of different software.
+`make`-ready bunch of scripts for easily (de)installation of different software and bunch of useful handy functions for custom scripting.
 
 ## Requirements
 
 * Ubuntu >= 20.04 (not tested with version < 20)
 * `bash`, `zsh` or other `sh`-compatible shell
 * `make` (optional but recommended)
-* `wget` (necessary for some scripts)
-* `git` (necessary for some scripts)
+* `wget` (required for some scripts)
+* `git` (required for some scripts)
 
-If some dependecies are missed for some of these scripts it is enougth to run `./install/apt` in most cases.
+If some dependecies are missed for some of these scripts it is enougth to run `./install/apt` in most cases, otherwise script will suggest (or even install) them.
 
 ## Usage
 
-### Clone this repo (recommended)
-
 ```shell
-# if git is installed
-git clone git@git.axenov.dev:anthony/my-env.git --depth=1
+# with git
+git clone git@git.axenov.dev:anthony/my-env.git --depth=1 --single-branch
 
-# if git is not installed
+# without git
 wget -qO - https://git.axenov.dev/anthony/my-env/archive/master.tar.gz | tar -zxf -
 
-# switch to repo dir
-cd my-env
-
-# generate fresh ./Makefile and get full list of `make` goals
-./gen-makefile
-
 # get full list of `make` goals
-make
-```
-
-### Selective straightforward installation
-
-```shell
-# from remote file (you can meet interaction bugs this way!)
-wget -qO - https://git.axenov.dev/anthony/my-env/raw/branch/master/install/apt | bash
-
-# from locally cloned repo (except scripts from ./packs)
-./install/apt
+cd my-env && make
 ```
 
 ## How to add my script?
@@ -78,17 +60,32 @@ mypackX: goalA goalB
 ```
 
 where:
-* `mypack*` is the pack name
+* `mypack*` is the pack name of your choice
 * `goal*` are script names in `./install`
 
-## TODO
+## Useful links and sources used
 
-* build: [flameshot](https://github.com/flameshot-org/flameshot#compilation)
-* build: [rustdesk](https://github.com/rustdesk/rustdesk#build)
-* [JB mono](https://www.jetbrains.com/ru-ru/lp/mono/#how-to-install) ([2](https://fonts.google.com/specimen/JetBrains+Mono))
-* update scripts (when possible)
-* uninstall scripts (when possible)
+* https://gist.github.com/anthonyaxenov/d53c4385b7d1466e0affeb56388b1005
+* https://gist.github.com/anthonyaxenov/89c99e09ddb195985707e2b24a57257d
+* ...and other my [gists](https://gist.github.com/anthonyaxenov/) with [SHELL] prefix
+* https://github.com/nvie/gitflow/blob/develop/gitflow-common (BSD License)
+* https://github.com/petervanderdoes/gitflow-avh/blob/develop/gitflow-common (FreeBSD License)
+* https://github.com/vaniacer/bash_color/blob/master/color
+* https://misc.flogisoft.com/bash/tip_colors_and_formatting
+* https://www-users.york.ac.uk/~mijp1/teaching/2nd_year_Comp_Lab/guides/grep_awk_sed.pdf
+* https://www.galago-project.org/specs/notification/
+* https://laurvas.ru/bash-trap/
+* https://stackoverflow.com/a/52674277
+* https://rtfm.co.ua/bash-funkciya-getopts-ispolzuem-opcii-v-skriptax/
+* https://gist.github.com/jacknlliu/7c51e0ee8b51881dc8fb2183c481992e
+* https://gist.github.com/anthonyaxenov/d53c4385b7d1466e0affeb56388b1005
+* https://github.com/nvie/gitflow/blob/develop/gitflow-common
+* https://github.com/petervanderdoes/gitflow-avh/blob/develop/gitflow-common
+* https://gitlab.com/kyb/autorsync/-/blob/master/
+* https://lug.fh-swf.de/vim/vim-bash/StyleGuideShell.en.pdf
+* https://www.thegeekstuff.com/2010/06/bash-array-tutorial/
+* https://www.distributednetworks.com/linux-network-admin/module4/ephemeral-reserved-portNumbers.php
 
 ## License
 
-[WTFPLv2](LICENSE)
+[WTFPLv2](LICENSE) but other licences are also possible.
diff --git a/TODO.md b/TODO.md
index 91bb068..8ebcab0 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,11 @@
 # Todo list
 
-* [ ] tdesktop (https://desktop.telegram.org)
-* [ ] spoofdpi (https://git.axenov.dev/mirrors/SpoofDPI/tags)
-* [ ] lazynvim (https://www.lazyvim.org)
-* [ ] ...
+* tdesktop (https://desktop.telegram.org)
+* spoofdpi (https://git.axenov.dev/mirrors/SpoofDPI/tags)
+* lazynvim (https://www.lazyvim.org)
+* build: [flameshot](https://github.com/flameshot-org/flameshot#compilation)
+* build: [rustdesk](https://github.com/rustdesk/rustdesk#build)
+* update scripts (when possible)
+* uninstall scripts (when possible)
+* ...
+
diff --git a/dotfiles/etc/docker/daemon.json b/dotfiles/etc/docker/daemon.json
index 9f808e8..9f371e6 100644
--- a/dotfiles/etc/docker/daemon.json
+++ b/dotfiles/etc/docker/daemon.json
@@ -6,6 +6,10 @@
         "https://daocloud.io",
         "https://c.163.com/",
         "https://registry.docker-cn.com",
-        "https://huecker.io"
+        "https://huecker.io",
+        "https://public.ecr.aws",
+        "https://quay.io",
+        "https://registry.access.redhat.com",
+        "https://registry.redhat.io"
     ]
 }
diff --git a/helpers b/helpers
deleted file mode 100644
index f834a3f..0000000
--- a/helpers
+++ /dev/null
@@ -1,224 +0,0 @@
-#!/bin/bash
-
-installed() {
-    command -v "$1" >/dev/null 2>&1
-}
-
-installed2() {
-    dpkg --list | grep -qw "ii  $1"
-}
-
-apt_install() {
-    sudo apt install -y --autoremove $*
-}
-
-require() {
-    sw=()
-    for package in "$@"; do
-        if ! installed "$package" && ! installed2 "$package"; then
-            sw+=("$package")
-        fi
-    done
-    if [ ${#sw[@]} -gt 0 ]; then
-        info "This packages will be installed in your system:\n${sw[*]}"
-        apt_install ${sw[*]}
-        [ $? -gt 0 ] && die "installation cancelled" 201
-    fi
-}
-
-require2() {
-    sw=()
-    for package in "$@"; do
-        if ! installed "$package" && ! installed2 "$package"; then
-            sw+=("$package")
-        fi
-    done
-    if [ ${#sw[@]} -gt 0 ]; then
-        die "This packages must be installed in your system:\n${sw[*]}" 200
-    fi
-}
-
-title() {
-    [ "$1" ] && title="$1" || title="$(grep -m 1 -oP "(?<=^##makedesc:\s).*$" ${BASH_SOURCE[1]})"
-    info
-    info "==============================================="
-    info "$title"
-    info "==============================================="
-    info
-}
-
-unpak_targz() {
-    require tar
-    tar -xzf "$1" -C "$2"
-}
-
-symlink() {
-    ln -sf "$1" "$2"
-}
-
-download() {
-    require wget
-    wget "$1" -O "$2"
-}
-
-clone() {
-    require git
-    git clone $*
-}
-
-clone_quick() {
-    require git
-    git clone $* --depth=1 --single-branch
-}
-
-abspath() {
-    echo $(realpath -q "${1/#\~/$HOME}")
-}
-
-is_writable() {
-    [ -w "$(abspath $1)" ]
-}
-
-is_dir() {
-    [ -d "$(abspath $1)" ]
-}
-
-is_file() {
-    [ -f "$(abspath $1)" ]
-}
-
-is_function() {
-    declare -F "$1" > /dev/null
-}
-
-regex_match() {
-    printf "%s" "$1" | grep -qP "$2"
-}
-
-in_array() {
-	local find=$1
-    shift
-    for e in "$@"; do
-        [[ "$e" == "$find" ]] && return 0
-    done
-    return 1
-}
-
-implode() {
-    local d=${1-}
-    local f=${2-}
-    if shift 2; then
-        printf %s "$f" "${@/#/$d}"
-    fi
-}
-
-IINFO="( i )"
-INOTE="( * )"
-IWARN="( # )"
-IERROR="( ! )"
-IFATAL="( @ )"
-ISUCCESS="( ! )"
-IASK="( ? )"
-IDEBUG="(DBG)"
-IVRB="( + )"
-
-BOLD="\e[1m"
-DIM="\e[2m"
-NOTBOLD="\e[22m" # sometimes \e[21m
-NOTDIM="\e[22m"
-NORMAL="\e[20m"
-RESET="\e[0m"
-
-FRESET="\e[39m"
-FBLACK="\e[30m"
-FWHITE="\e[97m"
-FRED="\e[31m"
-FGREEN="\e[32m"
-FYELLOW="\e[33m"
-FBLUE="\e[34m"
-FLRED="\e[91m"
-FLGREEN="\e[92m"
-FLYELLOW="\e[93m"
-FLBLUE="\e[94m"
-
-BRESET="\e[49m"
-BBLACK="\e[40m"
-BWHITE="\e[107m"
-BRED="\e[41m"
-BGREEN="\e[42m"
-BYELLOW="\e[43m"
-BBLUE="\e[44m"
-BLRED="\e[101m"
-BLGREEN="\e[102m"
-BLYELLOW="\e[103m"
-BLBLUE="\e[104m"
-
-dt() {
-    echo "[$(date +'%H:%M:%S')] "
-}
-
-ask() {
-    IFS= read -rp "$(print ${BOLD}${BBLUE}${FWHITE}${IASK}${BRESET}\ ${BOLD}$1 ): " $2
-}
-
-print() {
-    echo -e "$*${RESET}"
-}
-
-debug() {
-    if [ "$2" ]; then
-        print "${DIM}${BOLD}${RESET}${DIM}${FUNCNAME[1]:-?}():${BASH_LINENO:-?}\t$1 "
-    else
-        print "${DIM}${BOLD}${RESET}${DIM}$1 "
-    fi
-}
-
-verbose() {
-    print "${BOLD}${IVRB}${RESET}${FYELLOW} $1 "
-}
-
-info() {
-    print "${BOLD}${FWHITE}${BLBLUE}${IINFO}${RESET}${FWHITE} $1 "
-}
-
-note() {
-    print "${BOLD}${DIM}${FWHITE}${INOTE}${RESET} $1 "
-}
-
-success() {
-    print "${BOLD}${BGREEN}${FWHITE}${ISUCCESS}${BRESET}$FGREEN $1 "
-}
-
-warn() {
-    print "${BOLD}${BYELLOW}${FBLACK}${IWARN}${BRESET}${FYELLOW} Warning:${RESET} $1 "
-}
-
-error() {
-    print "${BOLD}${BLRED}${FWHITE}${IERROR} Error: ${BRESET}${FLRED} $1 " >&2
-}
-
-fatal() {
-    print "${BOLD}${BRED}${FWHITE}${IFATAL} FATAL: $1 " >&2
-    print_stacktrace
-}
-
-die() {
-    error "${1:-halted}"
-    exit ${2:-100}
-}
-
-print_stacktrace() {
-    STACK=""
-    local i
-    local stack_size=${#FUNCNAME[@]}
-    debug "Callstack:"
-    # for (( i=$stack_size-1; i>=1; i-- )); do
-    for (( i=1; i<$stack_size; i++ )); do
-        local func="${FUNCNAME[$i]}"
-        [ x$func = x ] && func=MAIN
-        local linen="${BASH_LINENO[$(( i - 1 ))]}"
-        local src="${BASH_SOURCE[$i]}"
-        [ x"$src" = x ] && src=non_file_source
-        debug "   at $func $src:$linen"
-    done
-}
diff --git a/helpers.sh b/helpers.sh
new file mode 100644
index 0000000..2471a01
--- /dev/null
+++ b/helpers.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+set -oe pipefail
+
+__root__=$( dirname $(readlink -e -- "${BASH_SOURCE}"))
+source $__root__/helpers/io.sh || exit 255
+source $__root__/helpers/basic.sh || exit 255
+source $__root__/helpers/debug.sh || exit 255
+source $__root__/helpers/packages.sh || exit 255
+
+title() {
+    [[ $__AAA_NO_TITLE = 1 ]] || {
+        [ "$1" ] && title="$1" || title="$(grep -m 1 -oP "(?<=^##makedesc:\s).*$" ${BASH_SOURCE[1]})"
+        info
+        info "==============================================="
+        info "$title"
+        info "==============================================="
+        info
+    }
+}
diff --git a/helpers/arg-parser/README.md b/helpers/arg-parser/README.md
new file mode 100644
index 0000000..612f5a9
--- /dev/null
+++ b/helpers/arg-parser/README.md
@@ -0,0 +1,29 @@
+# Argument parser for bash scripts
+
+More info:
+* 🇷🇺 [axenov.dev/bash-args](https://axenov.dev/bash-args/)
+* 🇺🇸 [axenov.dev/en/bash-processing-arguments-in-a-script-when-called-from-the-shell/](https://axenov.dev/en/bash-processing-arguments-in-a-script-when-called-from-the-shell)
+
+Tested in Ubuntu 20.04.2 LTS in:
+
+```
+bash 5.0.17(1)-release (x86_64-pc-linux-gnu)
+zsh 5.8 (x86_64-ubuntu-linux-gnu)
+```
+
+## Version history
+
+```
+v1.0 - initial
+v1.1 - arg(): improved skipping uninteresting args
+     - arg(): check next arg to be valid value
+v1.2 - removed all 'return' statements
+     - arg(): error message corrected
+     - new examples
+v1.3 - argl(): improved flag check
+     - some text corrections
+v1.4 - new function argn()
+     - some text corrections
+v1.5 - arg(), grep_match(): fixed searching for -e argument
+     - grep_match(): redirect output into /dev/null
+```
diff --git a/helpers/arg-parser/args.sh b/helpers/arg-parser/args.sh
new file mode 100644
index 0000000..0b717eb
--- /dev/null
+++ b/helpers/arg-parser/args.sh
@@ -0,0 +1,268 @@
+#!/bin/bash
+#########################################################################
+#                                                                       #
+# Argument parser for bash scripts                                      #
+#                                                                       #
+# Author: Anthony Axenov (Антон Аксенов)                                #
+# Version: 1.5                                                          #
+# License: MIT                                                          #
+#                                                                       #
+#########################################################################
+#                                                                       #
+# With 'getopt' you cannot combine different                            #
+# arguments for different nested functions.                             #
+#                                                                       #
+# 'getopts' does not support long arguments with                        #
+# values (like '--foo=bar').                                            #
+#                                                                       #
+# These functions supports different arguments and                      #
+# their combinations:                                                   #
+#   -a -b -c                                                            #
+#   -a avalue -b bvalue -c cvalue                                       #
+#   -cab bvalue                                                         #
+#   --arg                                                               #
+#   --arg=value -ab -c cvalue --foo                                     #
+#                                                                       #
+# Tested in Ubuntu 20.04.2 LTS in:                                      #
+#   bash 5.0.17(1)-release (x86_64-pc-linux-gnu)                        #
+#   zsh 5.8 (x86_64-ubuntu-linux-gnu)                                   #
+#                                                                       #
+#########################################################################
+
+#purpose    Little helper to check if string matches PCRE
+#argument   $1 - some string
+#argument   $2 - regex
+#exitcode	0 - string valid
+#exitcode	1 - string is not valid
+grep_match() {
+    printf "%s" "$1" | grep -qP "$2" >/dev/null
+}
+
+#purpose	Find short argument or its value
+#argument	$1 - (string) argument (without leading dashes; only first letter will be processed)
+#argument	$2 - (number) is it flag? 1 if is, otherwise 0 or nothing
+#argument	$3 - (string) variable to return value into
+#                (if not specified then it will be echo'ed in stdout)
+#returns    (string) 1 (if $2 == 1), value (if correct and if $2 != 1) or nothing
+#usage      To get value into var:      arg v 0 myvar    or    myvalue=$(arg 'v')
+#usage      To find flag into var:      arg f 1 myvar    or    flag=$(arg 'f')
+#usage      To echo value:              arg v
+#usage      To echo 1 if flag exists:   arg f
+arg() {
+    local need=${1:0:1} # argument to find (only first letter)
+    [ $need ] || {
+        echo "Argument is not specified!" >&2
+        exit 1
+    }
+    local isflag=$2 || 0 # should we find the value or just the presence of the $need?
+    local retvar=$3 || 0 # var to return value into (if 0 then value will be echo'ed in stdout)
+    local args=(${__MAIN_ARGS[0]}) # args we need are stored in 1st element of __MAIN_ARGS
+    for ((idx=0; idx<${#args[@]}; ++idx)) do # going through args
+        local arg=${args[$idx]} # current argument
+        # skip $arg if it starts with '--', letter or digit
+        grep_match "$arg" "^(\w{1}|-{2})" && continue
+        # clear $arg from special and duplicate characters
+        # e.g. 'fas-)dfs' will become 'fasd'
+        local chars="$(printf "%s" "${arg}" | tr -s [${arg}] | tr -d "[:punct:][:blank:]")"
+        # now we can check if $need is one of $chars
+        if grep_match "-$need" "^-[$chars]$"; then # if it is
+            if [[ $isflag = 1 ]]; then # and we expect it as a flag
+                # then return '1' back into $3 (if exists) or echo in stdout
+                [ $retvar ] && eval "$retvar='1'" || echo "1"
+            else # but if $arg is not a flag
+                # then get next argument as value of current one
+                local value="${args[$idx+1]}"
+                # check if it is valid value
+                if grep_match "$value" "^\w+$"; then
+                    # and return it back back into $3 (if exists) or echo in stdout
+                    [ $retvar ] && eval "$retvar='$value'" || echo "$value"
+                    break
+                else # otherwise throw error message into stderr (just in case)
+                    echo "Argument '$arg' must have a correct value!" >&2
+                    break
+                fi
+            fi
+        fi
+    done
+}
+
+#purpose	Find long argument or its value
+#argument	$1 - argument (without leading dashes)
+#argument	$2 - is it flag? 1 if is, otherwise 0 or nothing
+#argument	$3 - variable to return value into
+#                (if not specified then it will be echo'ed in stdout)
+#returns    (string) 1 (if $2 == 1), value (if correct and if $2 != 1) or nothing
+#usage      To get value into var:      arg v 0 myvar    or    myvalue=$(arg 'v')
+#usage      To find flag into var:      arg f 1 myvar    or    flag=$(arg 'f')
+#usage      To echo value:              arg v
+#usage      To echo 1 if flag exists:   arg f
+argl() {
+    local need=$1 # argument to find
+    [ $need ] || {
+        echo "Argument is not specified!" >&2
+        exit 1
+    }
+    local isflag=$2 || 0 # should we find the value or just the presence of the $need?
+    local retvar=$3 || 0 # var to return value into (if 0 then value will be echo'ed in stdout)
+    local args=(${__MAIN_ARGS[0]}) # args we need are stored in 1st element of __MAIN_ARGS
+    for ((idx=0; idx<${#args[@]}; ++idx)) do
+        local arg=${args[$idx]} # current argument
+        # if we expect $arg as a flag
+        if [[ $isflag = 1 ]]; then
+            # and if $arg has correct format (like '--flag')
+            if grep_match "$arg" "^--$need"; then
+                # then return '1' back into $3 (if exists) or echo in stdout
+                [ ! $retvar = 0 ] && eval "$retvar=1" || echo "1"
+                break
+            fi
+        else # but if $arg is not a flag
+            # check if $arg has correct format (like '--foo=bar')
+            if grep_match "$arg" "^--$need=.+$"; then # if it is
+                # then return part from '=' to arg's end as value back into $3 (if exists) or echo in stdout
+                [ ! $retvar = 0 ] && eval "$retvar=${arg#*=}" || echo "${arg#*=}"
+                break
+            fi
+        fi
+    done
+}
+
+#purpose    Get argument by its index
+#argument   $1 - (number) arg index
+#argument   $2 - (string) variable to return arg's name into
+#                (if not specified then it will be echo'ed in stdout)
+#returns    (string) arg name or nothing
+#usage      To get arg into var:    argn 1 myvar    or    arg=$(argn 1)
+#usage      To echo in stdout:      argn 1
+argn() {
+    local idx=$1 # argument index
+    [ $idx ] || {
+        error "Argument index is not specified!"
+        exit 1
+    }
+    local retvar=$2 || 0 # var to return value into (if 0 then value will be echo'ed in stdout)
+    local args=(${__MAIN_ARGS[0]}) # args we need are stored in 1st element of __MAIN_ARGS
+    local arg=${args[$idx]} # current argument
+    if [ $arg ]; then
+        [ ! $retvar = 0 ] && eval "$retvar=$arg" || echo "$arg"
+    fi
+}
+
+# Keep in mind:
+# 1. Short arguments can be specified contiguously or separately
+#    and their order does not matter, but before each of them
+#    (or the first of them) one leading dash must be specified.
+#    Valid combinations: '-a -b -c', '-cba', '-b -ac'
+# 2. Short arguments can have values and if are - value must go
+#    next to argument itself.
+#    Valid combinations: '-ab avalue', '-ba avalue', '-a avalue -b'
+# 3. Long arguments cannot be combined like short ones and each
+#    of them must be specified separately with two leading dashes.
+#    Valid combinations: '--foo --bar', '--bar --foo'
+# 4. Long arguments can have a value which must be specified after '='.
+#    Valid combinations: '--foo=value --bar', '--bar --foo=value'
+# 5. Values cannot contain spaces even in quotes both for short and
+#    long args, otherwise first word will return as value.
+# 6. You can use arg() or argl() to check presence of any arg, no matter
+#    if it has value or not.
+
+### USAGE ###
+# This is simple examples which you can play around with.
+
+# first we must save the original arguments passed
+# to the script when it was called:
+__MAIN_ARGS=$@
+
+echo -e "\n1. Short args (vars):"
+arg a 1 a  # -a
+arg v 0 v  # -v v_value
+arg c 1 c  # -c
+arg z 1 z  # -z (not exists)
+echo "1.1 a=$a"
+echo "1.2 v=$v"
+echo "1.3 c=$c"
+echo "1.4 z=$z"
+
+echo -e "\n2. Short args (echo):"
+echo "2.1 a=$(arg a 1)"
+echo "2.2 v=$(arg v 0)"
+echo "2.3 c=$(arg c 1)"
+echo "2.4 z=$(arg z 1)"
+
+echo -e "\n3. Long args (vars):"
+argl flag 1 flag # --flag
+argl param1 0 param1 # --param1=test
+argl param2 0 param2 # --param2=password
+argl bar 1 bar   # --bar (not exists)
+echo "3.1 flag=$flag"
+echo "3.2 param1=$param1"
+echo "3.3 param2=$param2"
+echo "3.4 bar=$bar"
+
+echo -e "\n4. Long args (echo):"
+echo "4.1 flag=$(argl flag 1)"
+echo "4.2 param1=$(argl param1 0)"
+echo "4.3 param2=$(argl param2 0)"
+echo "4.4 bar=$(argl bar 1)"
+
+echo -e "\n5. Args by index:"
+argn 1 first
+echo "5.1 arg[1]=$first"
+echo "5.2 arg[3]=$(argn 3)"
+
+# Well, now we will try to get global args inside different functions
+
+food() {
+    echo -e "\n=== food() ==="
+    arg f 0 food
+    argl 'food' 0 food
+    [ $food ] && echo "Om nom nom! $food is very tasty" || echo "Uh oh" >&2
+}
+
+hello() {
+    echo -e "\n=== hello() ==="
+    arg n 0 name
+    argl name 0 name
+    [ $name ] && echo "Hi, $name! How u r doin?" || echo "Hello, stranger..." >&2
+}
+
+hello
+food
+
+### OUTPUT ###
+
+# Command to run:
+# bash args.sh -va asdf --flag --param1=paramvalue1 -c --param2="somevalue2 sdf" --name="John" -f Seafood
+
+# 1. Short args (vars):
+# 1.1 a=1
+# 1.2 v=v_value
+# 1.3 c=1
+# 1.4 z=
+#
+# 2. Short args (echo):
+# 2.1 a=1
+# 2.2 v=v_value
+# 2.3 c=1
+# 2.4 z=
+#
+# 3. Long args (vars):
+# 3.1 longflag=1
+# 3.2 param1=test
+# 3.3 param2=password
+# 3.4 barflag=
+#
+# 4. Long args (echo):
+# 4.1 longflag=1
+# 4.2 param1=test
+# 4.3 param2=password
+# 4.4 barflag=
+#
+# 5. Args by index:
+# 5.1 arg[1]=asdf
+# 5.2 arg[3]=--param1=paramvalue1
+#
+# === hello() ===
+# Hi, John! How u r doin?
+#
+# === food() ===
+# Om nom nom! Seafood is very tasty
diff --git a/helpers/basic.sh b/helpers/basic.sh
new file mode 100644
index 0000000..d964f4b
--- /dev/null
+++ b/helpers/basic.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+source $( dirname $(readlink -e -- "${BASH_SOURCE}"))/io.sh || exit 255
+
+########################################################
+# Little handy helpers for scripting
+########################################################
+
+# convert relative path $1 to full one
+abspath() {
+    echo $(realpath -q "${1/#\~/$HOME}")
+}
+
+# check if path $1 is writable
+is_writable() {
+    [ -w "$(abspath $1)" ]
+}
+
+# check if path $1 is a directory
+is_dir() {
+    [ -d "$(abspath $1)" ]
+}
+
+# check if path $1 is a file
+is_file() {
+    [ -f "$(abspath $1)" ]
+}
+
+# check if an argument is a shell function
+is_function() {
+    declare -F "$1" > /dev/null
+}
+
+# check if string $1 matches regex $2
+regex_match() {
+    printf "%s" "$1" | grep -qP "$2"
+}
+
+# check if array $2 contains string $1
+in_array() {
+	local find=$1
+    shift
+    for e in "$@"; do
+        [[ "$e" == "$find" ]] && return 0
+    done
+    return 1
+}
+
+# join all elements of array $2 with delimiter $1
+implode() {
+    local d=${1-}
+    local f=${2-}
+    if shift 2; then
+        printf %s "$f" "${@/#/$d}"
+    fi
+}
+
+# open url $1 in system web-browser
+open_url() {
+    if which xdg-open > /dev/null; then
+        xdg-open "$1" </dev/null >/dev/null 2>&1 & disown
+    elif which gnome-open > /dev/null; then
+        gnome-open "$1" </dev/null >/dev/null 2>&1 & disown
+    fi
+}
+
+# unpack .tar.gz file $1 into path $2
+unpack_targz() {
+    require tar
+    tar -xzf "$1" -C "$2"
+}
+
+# make soft symbolic link of path $1 to path $2
+symlink() {
+    ln -sf "$1" "$2"
+}
+
+# download file $1 into path $2 using wget
+download() {
+    require wget
+    wget "$1" -O "$2"
+}
+
+# download file $1 into path $2 using curl
+cdownload() {
+    require curl
+    curl -fsSL "$1" -o "$2"
+}
diff --git a/helpers/debug.sh b/helpers/debug.sh
new file mode 100644
index 0000000..1efe3a2
--- /dev/null
+++ b/helpers/debug.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+source $( dirname $(readlink -e -- "${BASH_SOURCE}"))/io.sh || exit 255
+
+########################################################
+# Functions to debug scripts
+########################################################
+
+var_dump() {
+    debug "$1 = ${!1}"
+}
+
+print_stacktrace() {
+    STACK=""
+    local i
+    local stack_size=${#FUNCNAME[@]}
+    debug "Callstack:"
+    # for (( i=$stack_size-1; i>=1; i-- )); do
+    for (( i=1; i<$stack_size; i++ )); do
+        local func="${FUNCNAME[$i]}"
+        [ x$func = x ] && func=MAIN
+        local linen="${BASH_LINENO[$(( i - 1 ))]}"
+        local src="${BASH_SOURCE[$i]}"
+        [ x"$src" = x ] && src=non_file_source
+        debug "   at $func $src:$linen"
+    done
+}
diff --git a/helpers/git.sh b/helpers/git.sh
new file mode 100644
index 0000000..697ce05
--- /dev/null
+++ b/helpers/git.sh
@@ -0,0 +1,178 @@
+#!/bin/bash
+_dir=$( dirname $(readlink -e -- "${BASH_SOURCE}"))
+source $_dir/io.sh || exit 255
+source $_dir/basic.sh || exit 255
+source $_dir/pkg.sh || exit 255
+
+########################################################
+# Shorthands for git
+########################################################
+
+git.clone_quick() {
+    require git
+    git clone --depth=1 --single-branch $*
+}
+
+git.is_repo() {
+    require git
+    [ "$1" ] || die "Path is not specified" 101
+    require_dir "$1/"
+    check_dir "$1/.git"
+}
+
+git.require_repo() {
+    require git
+    git.is_repo "$1" || die "'$1' is not git repository!" 10
+}
+
+git.cfg() {
+    require git
+    [ "$1" ] || die "Key is not specified" 101
+    if [[ "$2" ]]; then
+        git config --global --replace-all "$1" "$2"
+    else
+        echo $(git config --global --get-all "$1")
+    fi
+}
+
+git.set_user() {
+    require git
+    [ "$1" ] || die "git.set_user: Repo is not specified" 100
+    git.cfg "$1" "user.name" "$2"
+    git.cfg "$1" "user.email" "$3"
+    success "User set to '$name <$email>' in ${FWHITE}$1"
+}
+
+git.fetch() {
+    require git
+    if [ "$1" ]; then
+        if git.remote_branch_exists "origin/$1"; then
+            git fetch origin "refs/heads/$1:refs/remotes/origin/$1" --progress --prune --quiet 2>&1 || die "Could not fetch $1 from origin" 12
+        else
+            warn "Tried to fetch branch 'origin/$1' but it does not exist."
+        fi
+    else
+        git fetch origin --progress --prune --quiet 2>&1 || exit 12
+    fi
+}
+
+git.reset() {
+    require git
+    git reset --hard HEAD
+    git clean -fd
+}
+
+git.clone() {
+    require git
+    git clone $* 2>&1
+}
+
+git.co() {
+    require git
+    git checkout $* 2>&1
+}
+
+git.is_it_current_branch() {
+    require git
+    [ "$1" ] || die "git.is_it_current_branch: Branch is not specified" 19
+    [[ "$(git.current_branch)" = "$1" ]]
+}
+
+git.pull() {
+    require git
+    [ "$1" ] && BRANCH=$1 || BRANCH=$(git.current_branch)
+    # note "Updating branch $BRANCH..."
+    git pull origin "refs/heads/$BRANCH:refs/remotes/origin/$BRANCH" --prune --force --quiet 2>&1 || exit 13
+    git pull origin --tags --force --quiet 2>&1 || exit 13
+    # [ "$1" ] || die "git.pull: Branch is not specified" 19
+    # if [ "$1" ]; then
+        # note "Updating branch $1..."
+        # git pull origin "refs/heads/$1:refs/remotes/origin/$1" --prune --force --quiet 2>&1 || exit 13
+    # else
+    #     note "Updating current branch..."
+    #     git pull
+    # fi
+}
+
+git.current_branch() {
+    require git
+    git branch --show-current || exit 18
+}
+
+git.local_branch_exists() {
+    require git
+    [ -n "$(git for-each-ref --format='%(refname:short)' refs/heads/$1)" ]
+}
+
+git.update_refs() {
+    require git
+    info "Updating local refs..."
+    git remote update origin --prune 1>/dev/null 2>&1 || exit 18
+}
+
+git.delete_remote_branch() {
+    require git
+    [ "$1" ] || die "git.remote_branch_exists: Branch is not specified" 19
+    if git.remote_branch_exists "origin/$1"; then
+        git push origin :"$1" # || die "Could not delete the remote $1 in $ORIGIN"
+        return 0
+    else
+        warn "Trying to delete the remote branch $1, but it does not exists in origin"
+        return 1
+    fi
+}
+
+git.is_clean_worktree() {
+    require git
+    git rev-parse --verify HEAD >/dev/null || exit 18
+    git update-index -q --ignore-submodules --refresh
+    git diff-files --quiet --ignore-submodules || return 1
+    git diff-index --quiet --ignore-submodules --cached HEAD -- || return 2
+    return 0
+}
+
+git.is_branch_merged_into() {
+    require git
+    [ "$1" ] || die "git.remote_branch_exists: Branch1 is not specified" 19
+    [ "$2" ] || die "git.remote_branch_exists: Branch2 is not specified" 19
+    git.update_refs
+    local merge_hash=$(git merge-base "$1"^{} "$2"^{})
+    local base_hash=$(git rev-parse "$1"^{})
+    [ "$merge_hash" = "$base_hash" ]
+}
+
+git.remote_branch_exists() {
+    require git
+    [ "$1" ] || die "git.remote_branch_exists: Branch is not specified" 19
+    git.update_refs
+	[ -n "$(git for-each-ref --format='%(refname:short)' refs/remotes/$1)" ]
+}
+
+git.new_branch() {
+    require git
+    [ "$1" ] || die "git.new_branch: Branch is not specified" 19
+    if [ "$2" ] && ! git.local_branch_exists "$2" && git.remote_branch_exists "origin/$2"; then
+        git.co -b "$1" origin/"$2"
+    else
+        git.co -b "$1" "$2"
+    fi
+}
+
+git.require_clean_worktree() {
+    require git
+    if ! git.is_clean_worktree; then
+        warn "Your working tree is dirty! Look at this:"
+        git status -bs
+        _T="What should you do now?\n"
+        _T="${_T}\t${BOLD}${FWHITE}0.${RESET} try to continue as is\t- errors may occur!\n"
+        _T="${_T}\t${BOLD}${FWHITE}1.${RESET} hard reset\t\t\t- clear current changes and new files\n"
+        _T="${_T}\t${BOLD}${FWHITE}2.${RESET} stash changes (default)\t- save all changes in safe to apply them later via 'git stash pop'\n"
+        _T="${_T}\t${BOLD}${FWHITE}3.${RESET} cancel\n"
+        ask "${_T}${BOLD}${FWHITE}Your choice [0-3]" reset_answer
+        case $reset_answer in
+            1 ) warn "Clearing your work..." && git.reset              ;;
+            3 ) exit                                                   ;;
+            * ) git stash -a -u -m "WIP before switch to $branch_task" ;;
+        esac
+    fi
+}
diff --git a/helpers/io.sh b/helpers/io.sh
new file mode 100644
index 0000000..36b742d
--- /dev/null
+++ b/helpers/io.sh
@@ -0,0 +1,112 @@
+#!/bin/bash
+
+########################################################
+# Simple and fancy input & output
+########################################################
+
+IINFO="( i )"
+INOTE="( * )"
+IWARN="( # )"
+IERROR="( ! )"
+IFATAL="( @ )"
+ISUCCESS="( ! )"
+IASK="( ? )"
+IDEBUG="(DBG)"
+IVRB="( + )"
+
+BOLD="\e[1m"
+DIM="\e[2m"
+NOTBOLD="\e[22m" # sometimes \e[21m
+NOTDIM="\e[22m"
+NORMAL="\e[20m"
+RESET="\e[0m"
+
+FRESET="\e[39m"
+FBLACK="\e[30m"
+FWHITE="\e[97m"
+FRED="\e[31m"
+FGREEN="\e[32m"
+FYELLOW="\e[33m"
+FBLUE="\e[34m"
+FLRED="\e[91m"
+FLGREEN="\e[92m"
+FLYELLOW="\e[93m"
+FLBLUE="\e[94m"
+
+BRESET="\e[49m"
+BBLACK="\e[40m"
+BWHITE="\e[107m"
+BRED="\e[41m"
+BGREEN="\e[42m"
+BYELLOW="\e[43m"
+BBLUE="\e[44m"
+BLRED="\e[101m"
+BLGREEN="\e[102m"
+BLYELLOW="\e[103m"
+BLBLUE="\e[104m"
+
+dt() {
+    echo "[$(date +'%H:%M:%S')] "
+}
+
+ask() {
+    IFS= read -rp "$(print ${BOLD}${BBLUE}${FWHITE}${IASK}${BRESET}\ ${BOLD}$1 ): " $2
+}
+
+print() {
+    echo -e "$*${RESET}"
+}
+
+debug() {
+    if [ "$2" ]; then
+        print "${DIM}${BOLD}${RESET}${DIM}$(dt)${IDEBUG} ${FUNCNAME[1]:-?}():${BASH_LINENO:-?}\t$1 " >&2
+    else
+        print "${DIM}${BOLD}${RESET}${DIM}$(dt)${IDEBUG} $1 " >&2
+    fi
+}
+
+verbose() {
+    print "${BOLD}$(dt)${IVRB}${RESET}${FYELLOW} $1 "
+}
+
+info() {
+    print "${BOLD}$(dt)${FWHITE}${BLBLUE}${IINFO}${RESET}${FWHITE} $1 "
+}
+
+note() {
+    print "${BOLD}$(dt)${DIM}${FWHITE}${INOTE}${RESET} $1 "
+}
+
+success() {
+    print "${BOLD}$(dt)${BGREEN}${FWHITE}${ISUCCESS}${BRESET}$FGREEN $1 "
+}
+
+warn() {
+    print "${BOLD}$(dt)${BYELLOW}${FBLACK}${IWARN}${BRESET}${FYELLOW} Warning:${RESET} $1 "
+}
+
+error() {
+    print "${BOLD}$(dt)${BLRED}${FWHITE}${IERROR} Error: ${BRESET}${FLRED} $1 " >&2
+}
+
+fatal() {
+    print "${BOLD}$(dt)${BRED}${FWHITE}${IFATAL} FATAL: $1 " >&2
+    print_stacktrace
+}
+
+die() {
+    error "${1:-halted}"
+    exit ${2:-255}
+}
+
+# var='test var_dump'
+# var_dump var
+# debug 'test debug'
+# verbose 'test verbose'
+# info 'test info'
+# note 'test note'
+# success 'test success'
+# warn 'test warn'
+# error 'test error'
+# fatal 'test fatal'
+# die 'test die'
diff --git a/helpers/log.sh b/helpers/log.sh
new file mode 100644
index 0000000..a1d9c6e
--- /dev/null
+++ b/helpers/log.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+########################################################
+# Logging functions
+########################################################
+
+# write some message $1 in log file and stdout with timestamp
+log_path="/home/$USER/logs"
+log() {
+    [ ! -d "$log_path" ] && log_path="./log"
+    [ ! -d "$log_path" ] && mkdir -p "$log_path"
+    echo -e "[$(date '+%H:%M:%S')] $*" | tee -a "$log_path/$(date '+%Y%m%d').log"
+}
diff --git a/helpers/misc.sh b/helpers/misc.sh
new file mode 100644
index 0000000..649d592
--- /dev/null
+++ b/helpers/misc.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+
+########################################################
+# Misc
+########################################################
+
+# https://askubuntu.com/a/30414
+is_full_screen() {
+    local WINDOW=$(echo $(xwininfo -id $(xdotool getactivewindow) -stats | \
+            egrep '(Width|Height):' | \
+            awk '{print $NF}') | \
+            sed -e 's/ /x/')
+    local SCREEN=$(xdpyinfo | grep -m1 dimensions | awk '{print $2}')
+    if [ "$WINDOW" = "$SCREEN" ]; then
+        return 0
+    fi
+    return 1
+}
+
+curltime() {
+    curl -w @- -o /dev/null -s "$@" <<'EOF'
+    time_namelookup: %{time_namelookup} sec\n
+       time_connect: %{time_connect} sec\n
+    time_appconnect: %{time_appconnect} sec\n
+   time_pretransfer: %{time_pretransfer} sec\n
+      time_redirect: %{time_redirect} sec\n
+ time_starttransfer: %{time_starttransfer} sec\n
+                     ---------------\n
+         time_total: %{time_total} sec\n
+EOF
+}
+
+ytm() {
+    youtube-dl \
+        --extract-audio \
+        --audio-format flac \
+        --audio-quality 0 \
+        --format bestaudio \
+        --write-info-json \
+        --output "$HOME/Downloads/ytm/%(playlist_title)s/%(channel)s - %(title)s.%(ext)s" \
+        $*
+}
+
+docker.ip() { # not finished
+    if [ "$1" ]; then
+        if [ "$1" = "-a" ]; then
+            docker ps -aq \
+            | xargs -n 1 docker inspect --format '{{.Name}}{{range .NetworkSettings.Networks}} {{.IPAddress}}{{end}}' \
+            | sed -e 's#^/##' \
+            | column -t
+        elif [ "$1" = "-c" ]; then
+            docker-compose ps -q \
+            | xargs -n 1 docker inspect --format '{{.Name}}{{range .NetworkSettings.Networks}} {{.IPAddress}}{{end}}' \
+            | sed -e 's#^/##' \
+            | column -t
+        else
+            docker inspect --format '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' "$1"
+            docker port "$1"
+        fi
+    else
+        docker ps -q \
+        | xargs -n 1 docker inspect --format '{{.Name}}{{range .NetworkSettings.Networks}} {{.IPAddress}}{{end}}' \
+        | sed -e 's#^/##' \
+        | column -t
+    fi
+}
diff --git a/helpers/notifications.sh b/helpers/notifications.sh
new file mode 100644
index 0000000..b81abce
--- /dev/null
+++ b/helpers/notifications.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+source $( dirname $(readlink -e -- "${BASH_SOURCE}"))/packages.sh || exit 255
+
+########################################################
+# Desktop notifications
+########################################################
+
+notify () {
+    require "notify-send"
+    [ -n "$1" ] && local title="$1" || local title="My notification"
+    local text="$2"
+    local level="$3"
+    local icon="$4"
+    case $level in
+        "critical") local timeout=0 ;;
+        "low") local timeout=5000 ;;
+        *) local timeout=10000 ;;
+    esac
+    notify-send "$title" "$text" -a "MyScript" -u "$level" -i "$icon" -t $timeout
+}
+
+notify_error() {
+    notify "Error" "$1" "critical" "dialog-error"
+}
+
+notify_warning() {
+    notify "Warning" "$1" "normal" "dialog-warning"
+}
+
+notify_info() {
+    notify "" "$1" "low" "dialog-information"
+}
diff --git a/helpers/packages.sh b/helpers/packages.sh
new file mode 100644
index 0000000..e98afae
--- /dev/null
+++ b/helpers/packages.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+source $( dirname $(readlink -e -- "${BASH_SOURCE}"))/io.sh || exit 255
+
+########################################################
+# Functions to control system packages
+########################################################
+
+installed() {
+    command -v "$1" >/dev/null 2>&1
+}
+
+installed_pkg() {
+    dpkg --list | grep -qw "ii  $1"
+}
+
+apt_ppa_add() {
+    sudo add-apt-repository -y $*
+}
+
+apt_ppa_remove() {
+    sudo add-apt-repository -ry $*
+}
+
+apt_update() {
+    sudo apt update $*
+}
+
+apt_install() {
+    sudo apt install -y $*
+}
+
+apt_remove() {
+    sudo apt purge -y $*
+}
+
+dpkg_install() {
+    sudo dpkg -i $*
+}
+
+dpkg_remove() {
+    sudo dpkg -r $*
+}
+
+dpkg_arch() {
+    dpkg --print-architecture
+}
+
+require() {
+    sw=()
+    for package in "$@"; do
+        if ! installed "$package" && ! installed_pkg "$package"; then
+            sw+=("$package")
+        fi
+    done
+    if [ ${#sw[@]} -gt 0 ]; then
+        info "These packages will be installed in your system:\n${sw[*]}"
+        apt_install ${sw[*]}
+        [ $? -gt 0 ] && die "installation cancelled" 201
+    fi
+}
+
+require_pkg() {
+    sw=()
+    for package in "$@"; do
+        if ! installed "$package" && ! installed_pkg "$package"; then
+            sw+=("$package")
+        fi
+    done
+    if [ ${#sw[@]} -gt 0 ]; then
+        die "These packages must be installed in your system:\n${sw[*]}" 200
+    fi
+}
diff --git a/helpers/testing.sh b/helpers/testing.sh
new file mode 100644
index 0000000..f4fa0ae
--- /dev/null
+++ b/helpers/testing.sh
@@ -0,0 +1,89 @@
+#!/bin/bash
+source $( dirname $(readlink -e -- "${BASH_SOURCE}"))/io.sh || exit 255
+
+########################################################
+# Testing functions
+########################################################
+
+# $1 - command to exec
+assert_exec() {
+    [ "$1" ] || exit 1
+    local prefix="$(dt)${BOLD}${FWHITE}[TEST EXEC]"
+    if $($1 1>/dev/null 2>&1); then
+        local text="${BGREEN} PASSED"
+    else
+        local text="${BLRED} FAILED"
+    fi
+    print "${prefix} ${text} ${BRESET} ($?):${RESET} $1"
+}
+# usage:
+
+# func1() {
+#     return 0
+# }
+# func2() {
+#     return 1
+# }
+# assert_exec "func1"  # PASSED
+# assert_exec "func2"  # FAILED
+# assert_exec "whoami" # PASSED
+
+
+# $1 - command to exec
+# $2 - expected output
+assert_output() {
+    [ "$1" ] || exit 1
+    [ "$2" ] && local expected="$2" || local expected=''
+    local prefix="$(dt)${BOLD}${FWHITE}[TEST OUTP]"
+    local output=$($1 2>&1)
+    local code=$?
+    if [[ "$output" == *"$expected"* ]]; then
+        local text="${BGREEN} PASSED"
+    else
+        local text="${BLRED} FAILED"
+    fi
+    print "${prefix} ${text} ${BRESET} (${code}|${expected}):${RESET} $1"
+    # print "\tOutput > $output"
+}
+# usage:
+
+# func1() {
+#     echo "some string"
+# }
+# func2() {
+#     echo "another string"
+# }
+# expect_output "func1" "string" # PASSED
+# expect_output "func2" "some"   # FAILED
+# expect_output "func2" "string" # PASSED
+
+
+# $1 - command to exec
+# $2 - expected exit-code
+assert_code() {
+    [ "$1" ] || exit 1
+    [ "$2" ] && local expected=$2 || local expected=0
+    local prefix="$(dt)${BOLD}${FWHITE}[TEST CODE]"
+    $($1 1>/dev/null 2>&1)
+    local code=$?
+    if [[ $code -eq $expected ]]; then
+        local text="${BGREEN} PASSED"
+    else
+        local text="${BLRED} FAILED"
+    fi
+    print "${prefix} ${text} ${BRESET} (${code}|${expected}):${RESET} $1"
+}
+# usage:
+
+# func1() {
+    # # exit 0
+    # return 0
+# }
+# func2() {
+    # # exit 1
+    # return 1
+# }
+# expect_code "func1" 0 # PASSED
+# expect_code "func1" 1 # FAILED
+# expect_code "func2" 0 # FAILED
+# expect_code "func2" 1 # PASSED
diff --git a/install/apache2 b/install/apache2
index 5d3f6ac..a33b3ec 100755
--- a/install/apache2
+++ b/install/apache2
@@ -1,15 +1,11 @@
 #!/bin/bash
 ##makedesc: Install apache2 (latest)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
-sudo apt install -y --autoremove apache2 && \
-    sudo systemctl restart apache2
+apt_install apache2
+sudo systemctl restart apache2
 
-[ $? = 0 ] && {
-    echo
-    success "apache2 installed!"
-    apache2 -v
-    echo
-}
+success "apache2 installed!"
+apache2 -v
diff --git a/install/apt b/install/apt
index 907af67..b25a512 100755
--- a/install/apt
+++ b/install/apt
@@ -1,8 +1,5 @@
 #!/bin/bash
 ##makedesc: Install software from apt
-source `dirname $0`/../helpers || exit 255
-
-title
 
 sudo apt update && \
     sudo apt upgrade -y --autoremove && \
@@ -27,7 +24,6 @@ sudo apt update && \
         libghc-zlib-dev \
         libssl-dev \
         lsb-release \
-        lsp-plugins \
         make \
         mc \
         meld \
@@ -36,7 +32,7 @@ sudo apt update && \
         net-tools \
         nmap \
         p7zip-full \
-        pulseeffects \
+        easyeffects \
         software-properties-common \
         terminator \
         ubuntu-restricted-extras \
@@ -51,9 +47,4 @@ sudo apt update && \
         tree \
         earlyoom
         # sqlitebrowser
-        # etckeeper \
-        # geoclue-2.0 \
-        # gnome-software \
-        # minder \
-        # redshift \
-        # redshift-gtk
+        # etckeeper
diff --git a/install/canon-mg2500 b/install/canon-mg2500
index 7047e21..dc9e132 100755
--- a/install/canon-mg2500
+++ b/install/canon-mg2500
@@ -1,17 +1,13 @@
 #!/bin/bash
 ##makedesc: Install Canon Pixma MG2500 + ppa
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
-sudo add-apt-repository -y ppa:thierry-f/fork-michael-gruz && \
-    sudo apt install -y \
-        cnijfilter-mg2500series \
-        scangearmp-mg2500series
+apt_ppa_add ppa:thierry-f/fork-michael-gruz
 
-[ $? = 0 ] && {
-    echo
-    success "Canon Pixma MG2500 installed!"
-    info "Now you must add a new printer in your system."
-    echo
-}
+apt_install cnijfilter-mg2500series
+apt_install scangearmp-mg2500series
+
+success "Drivers for Canon Pixma MG2500 installed!"
+info "Now you must reboot PC and connect your printer."
diff --git a/install/chrome b/install/chrome
index 47b8fdb..f4dd354 100755
--- a/install/chrome
+++ b/install/chrome
@@ -1,20 +1,17 @@
 #!/bin/bash
 ##makedesc: Install google chrome (latest)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://t.me/axenov_blog/251
 
 title
 
-mkdir -p "$HOME/install"
+mkdir -p "$HOME/install/deb"
 
 download "https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb" \
-    "$HOME/install/google-chrome.deb" && \
-    sudo dpkg -i "$HOME/install/google-chrome.deb"
+    "$HOME/install/deb/google-chrome.deb"
 
-[ $? = 0 ] && {
-    echo
-    success "Google Chrome installed!"
-    google-chrome --version
-    echo
-}
+dpkg_install "$HOME/install/deb/google-chrome.deb"
+
+success "Google Chrome installed!"
+google-chrome --version
diff --git a/install/composer b/install/composer
index 70c890f..136c3de 100755
--- a/install/composer
+++ b/install/composer
@@ -1,6 +1,7 @@
 #!/bin/bash
 ##makedesc: Install composer (latest)
-source `dirname $0`/../helpers || exit 255
+here=$( dirname $(readlink -e -- "${BASH_SOURCE}"))
+source "$here/../helpers.sh" || exit 255
 
 # https://getcomposer.org/doc/faqs/how-to-install-composer-programmatically.md
 
@@ -8,34 +9,30 @@ title
 
 require php
 
-if installed "composer"; then
-    warn "WARNING: Removing current composer to install its actual version"
-    sudo apt remove -y --autoremove composer
-    sudo rm -f \
-        "$HOME/.local/bin/composer" \
-        /bin/composer \
-        /usr/bin/composer \
-        /usr/local/bin/composer \
-        /usr/src/composer \
-        "$HOME/.local/bin/composer"
+if installed composer; then
+    warn "WARNING: Removing current composer to install latest one"
+    composer --version
+    __AAA_NO_TITLE=1 source $here/../uninstall/composer
 fi
 
-mkdir -p "$HOME/install" "$HOME/.local/bin"
-download "https://getcomposer.org/installer" "$HOME/install/composer-setup.php" && \
-    php "$HOME/install/composer-setup.php" --install-dir="$HOME/.local/bin/composer"
+mkdir -p "$HOME/install/other" "$HOME/.local/bin"
 
-[ $? = 0 ] && {
-    COMPOSER_GLOBAL_HOME="$($HOME/.local/bin/composer config -g home)"
-    NEWPATH="export PATH=\"$COMPOSER_GLOBAL_HOME/vendor/bin:\${PATH}\""
-    cat "$HOME/.profile" | grep -qoh "$NEWPATH" || {
-        $NEWPATH
-        echo "$NEWPATH" >> "$HOME/.profile"
-    }
+download "https://getcomposer.org/installer" \
+    "$HOME/install/other/composer-setup.php"
 
-    echo
-    success "composer installed!"
-    composer --version
-    echo
+php "$HOME/install/other/composer-setup.php" \
+    --install-dir="$HOME/.local/bin/" \
+    --filename="composer"
+
+COMPOSER_GLOBAL_HOME="$($HOME/.local/bin/composer config -g home)"
+NEWPATH="export PATH=\"$COMPOSER_GLOBAL_HOME/vendor/bin:\${PATH}\""
+cat "$HOME/.profile" | grep -qoh "$NEWPATH" || {
+    $NEWPATH
+    echo "$NEWPATH" >> "$HOME/.profile"
 }
 
 source "$HOME/.profile"
+
+success "composer installed!"
+composer --version
+
diff --git a/install/docker b/install/docker
index aced031..d9b2401 100755
--- a/install/docker
+++ b/install/docker
@@ -1,35 +1,39 @@
 #!/bin/bash
-##makedesc: Install docker (latest) + docker-compose (latest) + ppa
-source `dirname $0`/../helpers || exit 255
+##makedesc: Install docker (latest) + ppa
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://docs.docker.com/engine/install/ubuntu/
+# https://docs.docker.com/engine/install/linux-postinstall/#manage-docker-as-a-non-root-user
 
 title
 
-require ca-certificates
-require curl
-require gnupg
-require lsb-release
+for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do
+    apt_remove $pkg
+done
 
-sudo mkdir -p /etc/apt/keyrings
-curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
-| sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg && \
-    sudo chmod a+r /etc/apt/keyrings/docker.gpg && \
-    echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" \
-    | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null && \
-    sudo apt update && \
-    sudo apt install -y --autoremove \
-        docker-ce \
-        docker-ce-cli \
-        containerd.io \
-        docker-compose-plugin && \
-    sudo usermod -aG docker $(whoami)
+require ca-certificates lsb-release
+source /etc/os-release
 
-[ $? = 0 ] && {
-    echo
-    success "Docker installed!"
-    info "Probably, you need to relogin to apply 'docker' group."
-    info "Your ones currently are: $(groups)"
-    docker --version
-    echo
-}
+key="/etc/apt/keyrings/docker.asc"
+
+sudo install -m 0755 -d /etc/apt/keyrings
+sudo cdownload https://download.docker.com/linux/ubuntu/gpg $key
+sudo chmod a+r $key
+
+echo "deb [arch=$(dpkg_arch) signed-by=$key] https://download.docker.com/linux/ubuntu $VERSION_CODENAME stable" \
+    | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+
+apt_update
+apt_install \
+    docker-ce \
+    docker-ce-cli \
+    containerd.io \
+    docker-buildx-plugin \
+    docker-compose-plugin
+
+sudo usermod -aG docker $(whoami)
+newgrp docker
+
+success "Docker installed!"
+docker --version
+info "Probably, you need to relogin to apply 'docker' group permanently."
diff --git a/install/dots b/install/dots
index 1806089..dd35cac 100755
--- a/install/dots
+++ b/install/dots
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install dotfiles
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/install/droidcam b/install/droidcam
index 94b629a..31a194a 100755
--- a/install/droidcam
+++ b/install/droidcam
@@ -1,22 +1,21 @@
 #!/bin/bash
 ##makedesc: Install droidcam v1.9.0
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
-# https://www.dev47apps.com/droidcam/linux/
+#TODO
+exit
+
+# https://droidcam.app/linux/
 
 title
 
-mkdir -p "$HOME/install/droidcam"
+mkdir -p "$HOME/install/deb/"
 
-download "https://files.dev47apps.net/linux/droidcam_1.9.0.zip" "$HOME/install/droidcam.zip" && \
-    unzip -oq "$HOME/install/droidcam.zip" -d "$HOME/install/droidcam" && \
-    cd "$HOME/install/droidcam" && \
-    sudo ./install-client
+download "https://beta.droidcam.app/go/droidCam.client.setup.deb" "$HOME/install/deb/droidcam_client_amd64.deb"
 
-[ $? = 0 ] && {
-    echo
-    success "droidcam installed!"
-    info "Don't forget to install the android app:"
-    info "https://play.google.com/store/apps/developer?id=Dev47Apps"
-    echo
-}
+dpkg_install "$HOME/install/deb/droidcam_client_amd64.deb"
+apt_install v4l2loopback-dkms
+
+success "droidcam installed!"
+info "Don't forget to install the android app:"
+info "https://play.google.com/store/apps/developer?id=Dev47Apps"
diff --git a/install/droidcam-obs b/install/droidcam-obs
index 3ba0e05..0949757 100755
--- a/install/droidcam-obs
+++ b/install/droidcam-obs
@@ -1,11 +1,22 @@
 #!/bin/bash
 ##makedesc: Install droidcam-obs plugin v1.5.1
 
+#TODO
+# ffmpeg -version | head -n 1 | awk '{print $3}'
+# https://github.com/dev47apps/droidcam-obs-plugin/releases
+
+exit
+
+
+
 # https://www.dev47apps.com/droidcam/linux/
 # https://www.dev47apps.com/obs/
 # https://www.dev47apps.com/obs/usage.html
 # https://obsproject.com/forum/threads/how-to-start-virtual-camera-without-sudo-privileges.139783/
 
+
+
+
 echo
 echo "==============================================="
 echo "Installing droidcam-obs..."
diff --git a/install/flameshot b/install/flameshot
index dfdef4a..3666346 100755
--- a/install/flameshot
+++ b/install/flameshot
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install flameshot (latest)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/install/frkn b/install/frkn
index 5b25b5b..9d0b394 100755
--- a/install/frkn
+++ b/install/frkn
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install Wireguard + FRKN
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://frkn.org/ru/installation
 
diff --git a/install/git b/install/git
index 782dbfa..31d10c2 100755
--- a/install/git
+++ b/install/git
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install git (latest)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/install/golang b/install/golang
index b0a8220..fb727e8 100755
--- a/install/golang
+++ b/install/golang
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install golang v1.21.0
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://go.dev/dl/
 # https://golang.org/doc/install
diff --git a/install/grub-customizer b/install/grub-customizer
index cfc0eeb..eaeeb52 100755
--- a/install/grub-customizer
+++ b/install/grub-customizer
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install grub-customizer (latest + ppa)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/install/jbmono b/install/jbmono
index b0f4173..a721a41 100755
--- a/install/jbmono
+++ b/install/jbmono
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install JetBrains Mono fonts
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://www.jetbrains.com/lp/mono/#how-to-install
 
diff --git a/install/kde-backports b/install/kde-backports
index 57687e1..564ddcd 100755
--- a/install/kde-backports
+++ b/install/kde-backports
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install KDE Backports
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/install/omz-fancy b/install/omz-fancy
index 98fb0fb..cf807fb 100755
--- a/install/omz-fancy
+++ b/install/omz-fancy
@@ -1,6 +1,15 @@
 #!/bin/bash
 ##makedesc: Install omz fancy (powerline10k + MesloLGS font)
 
+# https://gist.github.com/anthonyaxenov/b8460935d06b9f0da72def03d0f26515
+
+# Based on:
+# https://github.com/Powerlevel9k/powerlevel9k/wiki/Install-Instructions
+# https://github.com/ohmyzsh/ohmyzsh
+# https://powerline.readthedocs.io/en/latest/installation/linux.html#fonts-installation
+# https://gist.github.com/dogrocker/1efb8fd9427779c827058f873b94df95
+# https://linuxhint.com/install_zsh_shell_ubuntu_1804/
+
 echo
 echo "==============================================="
 echo "Installing omz fancy: powerline10k + MesloLGS font..."
diff --git a/install/openvpn b/install/openvpn
index f52a536..3ee24b3 100755
--- a/install/openvpn
+++ b/install/openvpn
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install openvpn v2.6.3 (src)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://openvpn.net/community-downloads/
 # https://openvpn.net/community-resources/installing-openvpn/
@@ -15,7 +15,7 @@ require libssl-dev \
 
 mkdir -p "$HOME/install/"
 download "https://swupdate.openvpn.org/community/releases/openvpn-${OVPNVER}.tar.gz" "$HOME/install/openvpn-${OVPNVER}.tar.gz" && \
-    unpak_targz "$HOME/install/openvpn-${OVPNVER}.tar.gz" "$HOME/install/" && \
+    unpack_targz "$HOME/install/openvpn-${OVPNVER}.tar.gz" "$HOME/install/" && \
     cd "$HOME/install/openvpn-${OVPNVER}" && \
     sudo ./configure && \
     sudo make && \
diff --git a/install/papirus b/install/papirus
index 1e576cb..baa9708 100755
--- a/install/papirus
+++ b/install/papirus
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install papirus-icon-theme (latest)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/install/pgsql b/install/pgsql
index 81de742..b159b14 100755
--- a/install/pgsql
+++ b/install/pgsql
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install postgresql (latest) and php-pgsql (if php is installed)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/install/php b/install/php
index 8511947..3d9012a 100755
--- a/install/php
+++ b/install/php
@@ -1,7 +1,7 @@
 #!/bin/bash
-##makedesc: Install php v8.1 + ppa
+##makedesc: Install php v8.3 + ppa
 
-[ $1 ] && PHPVER="$1" || PHPVER="8.1"
+[ $1 ] && PHPVER="$1" || PHPVER="8.3"
 echo
 echo "==============================================="
 echo "Installing php${PHPVER}..."
diff --git a/install/postman b/install/postman
index 999db63..ff8932a 100755
--- a/install/postman
+++ b/install/postman
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install postman (latest)
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://learning.postman.com/docs/getting-started/installation-and-updates/#installing-postman-on-linux
 
@@ -13,7 +13,7 @@ mkdir -p "$HOME/install" && \
     "$HOME/.local/share/applications"
 
 download "https://dl.pstmn.io/download/latest/linux64" "$HOME/install/postman.tar.gz" && \
-    unpak_targz "$HOME/install/postman.tar.gz" "$HOME/install" && \
+    unpack_targz "$HOME/install/postman.tar.gz" "$HOME/install" && \
     symlink "$HOME/install/Postman/Postman" "$HOME/.local/bin/postman" && \
     cat << EOF > "$HOME/.local/share/applications/Postman.desktop" && sudo update-desktop-database
 [Desktop Entry]
diff --git a/install/sublimetext b/install/sublimetext
index 084712f..0ad0ffb 100755
--- a/install/sublimetext
+++ b/install/sublimetext
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Install Sublime Text
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 # https://www.sublimetext.com/download_thanks?target=x64-deb
 # https://gist.github.com/skoqaq/3f3e8f28e23c881143cef9cf49d821ff
diff --git a/install/vscode b/install/vscode
index 9f714db..ea0d91c 100755
--- a/install/vscode
+++ b/install/vscode
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: VSCode deb-package
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
diff --git a/tools/README.md b/tools/README.md
new file mode 100644
index 0000000..99dd29a
--- /dev/null
+++ b/tools/README.md
@@ -0,0 +1,19 @@
+# Shell scripts
+
+## Russian
+
+Эти скрипты я писал в разное время для решения разных задач.
+Чтобы они не растерялись по репозиториям и носителям, я решил собрать их здесь в одну кучу.
+
+Я всегда использую Ubuntu в качестве своих настольных и серверных ОС, поэтому все эти скрипты писались и использовались в этих средах с версий 18.*.
+
+Многие скрипты зависимы от [io.sh](/io.sh).
+
+## English
+
+These scripts were written at different times to solve different my own problems.
+I decided to collect them here in a heap so that they are not lost in repositories and media.
+
+I always use Ubuntu as my desktop and server OS, so all these scripts has been written and used in these environments since version 18.*.
+
+Many scripts depending on [io.sh](/io.sh).
diff --git a/tools/basic-ubuntu-lemp.sh b/tools/basic-ubuntu-lemp.sh
new file mode 100644
index 0000000..833ca26
--- /dev/null
+++ b/tools/basic-ubuntu-lemp.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+apt update && apt upgrade -y --autoremove
+apt install -y \
+    apt-transport-https \
+    build-essential \
+    ca-certificates \
+    cmake \
+    curl \
+    dialog \
+    gettext \
+    gnupg \
+    htop \
+    libaio1 \
+    libcurl4-gnutls-dev \
+    libexpat1-dev \
+    libghc-zlib-dev \
+    libssl-dev \
+    make \
+    mc \
+    nano \
+    net-tools \
+    nmap \
+    p7zip-full \
+    software-properties-common \
+    unzip \
+    inotify-tools \
+    git \
+    mariadb-server \
+    mariadb-client \
+    nginx \
+    certbot
diff --git a/tools/dc b/tools/dc
new file mode 100644
index 0000000..d64a048
--- /dev/null
+++ b/tools/dc
@@ -0,0 +1,26 @@
+#!/bin/bash
+CONTAINER="my-container" # the name of the container in which to 'exec' something
+CONFIG="$(dirname $([ -L $0 ] && readlink -f $0 || echo $0))/docker-compose.yml" # path to compose yml file
+CMD="docker-compose -f $CONFIG" # docker-compose command
+APP_URL='http://localhost:8000/'
+
+open_browser() {
+    if which xdg-open > /dev/null; then
+        xdg-open "$1" </dev/null >/dev/null 2>&1 & disown
+    elif which gnome-open > /dev/null; then
+        gnome-open "$1" </dev/null >/dev/null 2>&1 & disown
+    fi
+}
+
+case "$1" in
+    '' | 'help' ) echo -e "Provide one of operations: \t start, stop, up, down, restart, rebuild, open";
+                  echo "Otherwise all args will be passed to 'docker exec -ti $CONTAINER ...'" ;;
+    'open'      ) open_browser $APP_URL ;;
+    'up'        ) $CMD up -d --build ;; # build and start containers
+    'down'      ) $CMD down --remove-orphans ;; # stop and remove containers
+    'start'     ) $CMD start ;; # start containers
+    'stop'      ) $CMD stop ;; # stop containers
+    'restart'   ) $CMD stop && $CMD start ;; # restart containers
+    'rebuild'   ) $CMD down --remove-orphans && $CMD up -d --build ;; # rebuild containers
+    *           ) docker exec -ti $CONTAINER $@ # exec anything in container
+esac
diff --git a/tools/second-mon.sh b/tools/display-resolution.sh
similarity index 54%
rename from tools/second-mon.sh
rename to tools/display-resolution.sh
index 4d66537..8ec6120 100755
--- a/tools/second-mon.sh
+++ b/tools/display-resolution.sh
@@ -1,54 +1,55 @@
 #!/bin/bash
+# https://gist.github.com/anthonyaxenov/c16e1181d4b8a8644c57ec8a1f6cf21c
 #########################################################################
 #                                                                       #
-# Set display resolution                                                #
+# Set output resolution                                                 #
 #                                                                       #
 # Author: Anthony Axenov (Антон Аксенов)                                #
 # Version: 1.0                                                          #
-# License: WTFPL                                                        #
+# License: WTFPLv2                                                      #
 #                                                                       #
 #########################################################################
 #                                                                       #
-# Using this script you can change your display resolution              #
+# Using this script you can change your output resolution               #
 # to any one you need. Just adjust some vars below and run script       #
 # (chmod +x needed).                                                    #
 #                                                                       #
 #########################################################################
 
-# https://gist.github.com/anthonyaxenov/c16e1181d4b8a8644c57ec8a1f6cf21c
-
-# Set display name to work with. You can get it via 'xrandr --listactivemonitors'
-display="HDMI-2"
-# Set width of this display in px
-width=1600
-# Set height of this display in px
-height=900
+# Set output name to work with. You can get it via 'xrandr --listactivemonitors'
+output="HDMI-3"
+# Set width of this output in px
+width=1920
+# Set height of this output in px
+height=1080
+# Set refresh rate in Hz of this output in px
+refresh=120
 
 # Sometimes cvt and gtf generates different modelines.
 # You can play around and look which of them gives best result:
-modeline=$(cvt ${width} ${height} | grep "Modeline")
-# modeline=$(gtf ${width} ${height} 60 | grep "Modeline")
+modeline=$(cvt ${width} ${height} ${refresh} | grep "Modeline")
+# modeline=$(gtf ${width} ${height} ${refresh} | grep "Modeline")
 
 # Some important data needed to xrandr:
-modename="${width}x${height}_my"
+modename="${width}x${height}@${refresh}_my"
 params=$(echo "$modeline" | sed "s|^\s*Modeline\s*\"[0-9x_.]*\"\s*||")
 
-echo "Set resolution ${width}x${height} on display $display:"
+echo "Set resolution ${width}x${height}@${refresh} on output $output:"
 echo "$modename $params"
 
 # Simple logic:
-# 1. Switch display to safe mode which always exists (I believe) to avoid errors
-xrandr --output $display --mode 640x480
-# 2. If display aready have our mode -- we must delete it to avoid errors
+# 1. Switch output to safe mode which always exists (I believe) to avoid errors
+xrandr --output $output --mode 640x480 --verbose
+# 2. If output aready have our mode -- we must delete it to avoid errors
 if $(xrandr | grep -q "$modename"); then
-    # 2.1. Detach mode from display
-    xrandr --delmode $display $modename
+    # 2.1. Detach mode from output
+    xrandr --delmode $output $modename
     # 2.2. Remove mode itself
     xrandr --rmmode $modename
 fi
 # 3. Create new mode with freshly generated parameters
-xrandr --newmode $modename $params
-# 4. Attach mode to our display
-xrandr --addmode $display $modename
-# 5. Switch display to this mode immidiately
-xrandr --output $display --mode $modename
+xrandr --newmode $modename $params --verbose
+# 4. Attach mode to our output
+xrandr --addmode $output $modename --verbose
+# 5. Switch output to this mode immidiately
+xrandr --output $output --mode $modename --refresh $refresh --verbose
diff --git a/tools/free-space.sh b/tools/free-space.sh
old mode 100644
new mode 100755
diff --git a/tools/init-home-mediasrv.sh b/tools/init-home-mediasrv.sh
new file mode 100644
index 0000000..f07520f
--- /dev/null
+++ b/tools/init-home-mediasrv.sh
@@ -0,0 +1,121 @@
+#!/bin/bash
+
+sudo apt update && sudo apt upgrade -y --autoremove
+sudo apt install -y \
+    alien \
+    apt-transport-https \
+    build-essential \
+    ca-certificates \
+    cmake \
+    curl \
+    dconf-editor \
+    default-jdk \
+    dialog \
+    gettext \
+    gnupg \
+    gparted \
+    hardinfo \
+    htop \
+    libaio1 \
+    libcurl4-gnutls-dev \
+    libexpat1-dev \
+    libghc-zlib-dev \
+    libssl-dev \
+    lsb-release \
+    lsp-plugins \
+    make \
+    mc \
+    nano \
+    neofetch \
+    net-tools \
+    nmap \
+    p7zip-full \
+    easyeffects \
+    software-properties-common \
+    ubuntu-restricted-extras \
+    unzip \
+    vlc \
+    ffmpeg \
+    xclip \
+    inotify-tools \
+    notify-osd \
+    fonts-open-sans \
+    libnotify-bin \
+    gnome-software \
+    gnome-software-plugin-flatpak \
+    gnome-software-plugin-snap \
+    terminator \
+    geoclue-2.0 \
+    redshift \
+    redshift-gtk \
+    samba \
+    dkms
+
+
+# https://selectel.ru/blog/tutorials/how-to-install-and-configure-samba-on-ubuntu-20-04/
+# https://linuxconfig.org/how-to-configure-samba-server-share-on-ubuntu-22-04-jammy-jellyfish-linux
+# https://phoenixnap.com/kb/ubuntu-samba
+# https://computingforgeeks.com/install-and-configure-samba-server-share-on-ubuntu/
+# https://linux.how2shout.com/how-to-install-samba-on-ubuntu-22-04-lts-jammy-linux/
+sudo cp /etc/samba/smb.conf /etc/samba/smb.conf.bak
+sudo bash -c 'grep -v -E "^#|^;" /etc/samba/smb.conf.bak | grep . > /etc/samba/smb.conf'
+sudo systemctl enable --now smbd
+sudo usermod -aG sambashare $USER
+sudo smbpasswd -a $USER
+
+
+
+
+sudo add-apt-repository -y ppa:agornostal/ulauncher && \
+    sudo apt install -y --autoremove ulauncher
+
+curl -L https://yt-dl.org/downloads/latest/youtube-dl -o "${HOME}/.local/bin/youtube-dl" && \
+    sudo chmod +rx "${HOME}/.local/bin/youtube-dl"
+
+wget "https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb" && \
+    sudo dpkg -i google-chrome-stable_current_amd64.deb
+
+git clone https://github.com/aircrack-ng/rtl8812au.git && \
+    cd rtl8812au && \
+    sudo make dkms_install
+
+sudo curl -s -o /usr/share/keyrings/syncthing-archive-keyring.gpg https://syncthing.net/release-key.gpg && \
+    echo "deb [signed-by=/usr/share/keyrings/syncthing-archive-keyring.gpg] https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list && \
+    echo "deb [signed-by=/usr/share/keyrings/syncthing-archive-keyring.gpg] https://apt.syncthing.net/ syncthing candidate" | sudo tee /etc/apt/sources.list.d/syncthing.list && \
+    sudo apt update && sudo apt install -y --autoremove syncthing && \
+    wget "https://raw.githubusercontent.com/syncthing/syncthing/main/etc/linux-desktop/syncthing-start.desktop" -O $HOME/.local/share/applications/syncthing-start.desktop && \
+    wget "https://raw.githubusercontent.com/syncthing/syncthing/main/etc/linux-desktop/syncthing-ui.desktop" -O $HOME/.local/share/applications/syncthing-ui.desktop && \
+    ln -sf $HOME/.local/share/applications/syncthing-start.desktop $HOME/.config/autostart/syncthing-start.desktop
+
+
+
+#####################################################################
+
+sudo apt install -y kodi kodi-pvr-iptvsimple
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/tools/inotifywait-cp/README.md b/tools/inotifywait-cp/README.md
new file mode 100644
index 0000000..a4d8bfe
--- /dev/null
+++ b/tools/inotifywait-cp/README.md
@@ -0,0 +1,5 @@
+# Backing up photos from Syncthing
+
+More info:
+* 🇷🇺 [axenov.dev/резервное-копирование-фотографий-со](https://axenov.dev/резервное-копирование-фотографий-со/)
+* 🇺🇸 (planned to translate)
diff --git a/tools/inotifywait-cp/inotifywait-cp.service b/tools/inotifywait-cp/inotifywait-cp.service
new file mode 100644
index 0000000..57ab4d6
--- /dev/null
+++ b/tools/inotifywait-cp/inotifywait-cp.service
@@ -0,0 +1,19 @@
+# Daemon file
+# Place or symlink it to /etc/systemd/system/inotifywait-cp.service
+# Enable and start: sudo systemctl enable --now inotifywait-cp
+# Check it:         sudo systemctl status inotifywait-cp
+
+[Unit]
+Description=Photosync from android
+
+[Service]
+Type=simple
+Restart=always
+# correct these parameters as needed:
+User=user
+WorkingDirectory=/home/user
+ExecStart=bash /home/user/.local/bin/photosync-a53.sh
+
+
+[Install]
+WantedBy=network.target
diff --git a/tools/inotifywait-cp/inotifywait-cp.sh b/tools/inotifywait-cp/inotifywait-cp.sh
new file mode 100644
index 0000000..b743933
--- /dev/null
+++ b/tools/inotifywait-cp/inotifywait-cp.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+# My use case:
+# syncthing synchronizes ALL changes in DCIM directory on my android to PC.
+# I wanted files to be copied somewhere else on my PC to stay forever, so I
+# could sort them later and safely free some space on mobile without loss.
+# Also I wish to have some stupid log with history of such events.
+
+# inotify-tools package must be installed!
+
+# CHANGE THIS PARAMETERS to ones you needed
+dir_src="$HOME/Syncthing/Mobile/Camera"
+dir_dest="$HOME/some/safe/place"
+dir_logs="$HOME/inotifywait-cp-logs"
+regexp="[0-9]{8}_[0-9]{6}.*\.(jpg|mp4|gif)"
+
+print() {
+    echo -e "[`date '+%H:%M:%S'`] $*" \
+    | tee -a "$dir_logs/`date '+%Y%m%d'`.log"
+}
+
+copy () {
+    mkdir -p "$dir_src" "$dir_dest" "$dir_logs"
+    if [ -f "$dir_dest/$1" ]; then
+        print "SKIPPED:\t$dir_dest/$1"
+    else
+        cp "$dir_src/$1" "$dir_dest/$1"
+        print "COPIED:\t$dir_src/$1 => $dir_dest/$1"
+    fi
+}
+
+mkdir -p "$dir_src" "$dir_dest" "$dir_logs"
+
+print "START\t========================="
+
+# First, try to backup files synced since last exec of this script
+ls -1 "$dir_src" \
+| grep -E "^$regexp$" \
+| while read filename; do copy "$filename"; done
+
+# Next, run inotifywait against source directory with args:
+# --quiet     -- print less (only print events)
+# --monitor   -- don't stop after first event (like infinite loop)
+# --event     -- first syncthing creates hidden file to write data into
+#                then renames it according to source file name, so here
+#                we listen to MOVED_TO event to catch final filename
+# --format %f -- print only filename
+# --include   -- filename regexp to catch event from, ensure your $regexp
+#                is correct or remove line 56 to catch synced ALL files
+
+inotifywait \
+    --quiet \
+    --monitor \
+    --event moved_to \
+    --format %f \
+    --include "$regexp" \
+    "$dir_src" \
+    | while read filename; do copy "$filename"; done
+
+print "FINISH\t========================="
diff --git a/tools/netbeans-php-wrapper/php b/tools/netbeans-php-wrapper/php
new file mode 100644
index 0000000..77c5792
--- /dev/null
+++ b/tools/netbeans-php-wrapper/php
@@ -0,0 +1,157 @@
+#!/bin/bash
+
+# Welcome to amusement park!
+
+[[ "$1" = '--help' ]] || [[ "$1" = '-h' ]] && cat <<EOF && exit
+NetBeans docker wrapper for php
+===============================
+Anthony Axenov (c) 2023, The MIT License
+https://axenov.dev
+https://opensource.org/license/mit
+Replacement host php interpreter with dockerized one to run & debug cli php scripts.
+Usage:
+    ./$(basename $0) --container=<NAME> [--map=<PATH1>:<PATH2>] [PHP_ARGS] <SCRIPT> [SCRIPT_ARGS]
+Arguments:
+    --container : docker container where your SCRIPT is located. Required.
+    --map       : sources path mapped from the host to container. Not required.
+                  PATH1 is an absolute path to php sources directory on the host.
+                  PATH2 is an absolute path of the same directory inside of container.
+                  Delimiter ':' is required. If PATH1, PATH2 or delimiter is missed
+                  or value is empty then error will be thrown.
+    PHP_ARGS    : arguments you can pass to real php interpreter according to its --help.
+                  Not required.
+    SCRIPT      : a path to script file (.php) to be executed in container. Required.
+                  Note that this file must exist inside or be available from that container.
+    SCRIPT_ARGS : arguments to call your script with. They will be passed to script as is.
+                  Not required.
+Read this article to know how to set this helper as interpreter for NetBeans:
+ru: https://axenov.dev/netbeans-php-docker-xdebug-cli
+en: https://axenov.dev/en/netbeans-php-docker-xdebug-cli-en
+EOF
+
+pwd=$(pwd)         # current working directory
+cmdline=($@)       # copy currently called command line to array
+collect_php_args=1 # should we collect php args or script ones?
+quiet=0            # should we print some useful data before executing?
+
+# find a path where this wrapper is located
+wrapper_dir="$(dirname $0)"
+
+# find a path where project is probably located
+project_dir="$(dirname $wrapper_dir)"
+
+# here we check if this wrapper is global or local
+# but if it is set as global from nbproject dir of
+# current project then it is not detected as global
+# anyway behavior will be correct
+nbproject="$(basename $wrapper_dir)"
+[ "$nbproject" = 'nbproject' ] && is_global=0 || is_global=1
+
+# prepare new array to collect php args
+declare -a php_cmd=("docker" "exec")
+
+# and another one for script args
+declare -a script_args=()
+
+# and one more for directory mapping
+declare -a map_arr=()
+
+# iterate over arguments we received from netbeans
+for arg in "${cmdline[@]}"; do
+
+    # if this is a container name
+    if [ "${arg::11}" = '--container' ]; then
+        container="${arg:12}" # save it
+        php_cmd+=("$container" 'php') # add php itself
+        continue # jump to next iteration
+    fi
+
+    # if this is a path map
+    if [ "${arg::5}" = '--map' ]; then
+        map="${arg:6}" # save it
+        map_arr=(${map//:/ }) # split it and check if it is correct
+        if [ -z "${map_arr[0]}" ] || [ -z "${map_arr[1]}" ]; then
+            echo "ERROR: directory map is incorrect!"
+            echo "Use $0 --help to get info about how to use this wrapper."
+            echo "Exit code 3."
+            exit 3
+        fi
+        continue # jump to next iteration
+    fi
+
+    # if this is a container name
+    if [ "${arg::7}" = '--quiet' ]; then
+        quiet=1
+        continue # jump to next iteration
+    fi
+
+    # if this is an absolute path to a script file
+    if [ -f "$arg" ]; then
+        # make its path correct for container
+        if [ "$map" ]; then # when paths are mapped
+            # remove first part of map from an absolute filepath and append result to second map part
+            filepath="${map_arr[1]}${arg##${map_arr[0]}}"
+        else # when paths are NOT mapped
+            # remove project path from absolute filepath
+            filepath="${arg##$project_dir/}"
+        fi
+        php_cmd+=("$filepath") # append php args with filepath
+        collect_php_args=0 # now we need to collect script args
+        continue # jump to next iteration
+    fi
+
+    if [ "$collect_php_args" = 1 ]; then # if we collect php args
+        php_cmd+=("$arg") # add current arg to php args as is
+        continue # jump to next iteration
+    fi
+
+    script_args+=("$arg") # otherwise add current arg to script args as is
+done
+
+# docker container name is required so we must halt here if there is no one
+if [ -z "$container" ]; then
+    echo "ERROR: no docker container is specified!" >&2
+    echo "Use $0 --help to get info about how to use this wrapper." >&2
+    echo "Exit code 1." >&2
+    exit 1
+fi
+
+# path to php script is also required so we must halt here too if there is no one
+if [ -z "$filepath" ]; then
+    echo "ERROR: no script filepath is specified!" >&2
+    echo "Use $0 --help to get info about how to use this wrapper." >&2
+    echo "Exit code 2." >&2
+    exit 2
+fi
+
+cmdline="${php_cmd[*]} ${script_args[*]}" # make a command to execute
+
+# print some important data collected above
+if [ "$quiet" = 0 ]; then
+    echo "NetBeans docker wrapper for php"
+    echo "==============================="
+    echo -e "Container name:    $container"
+    echo -e "Script path:       $filepath"
+    echo -e "Directory mapping: ${map:-(none)}"
+    echo -e "Command line:\n$cmdline\n"
+fi
+
+# some debug output
+# echo "=== some debug output ========="
+# cat <<EOF | column -t
+# is_global $is_global
+# container $container
+# pwd $pwd
+# wrapper_dir $wrapper_dir
+# nbproject $nbproject
+# project_dir $project_dir
+# map $map
+# map_arr[0] ${map_arr[0]}
+# map_arr[1] ${map_arr[1]}
+# filepath $filepath
+# EOF
+# echo "==============================="
+
+$cmdline # execute
+
+# that's folks!
diff --git a/tools/quick-backup.sh b/tools/quick-backup.sh
index a662228..b053bc0 100755
--- a/tools/quick-backup.sh
+++ b/tools/quick-backup.sh
@@ -1,16 +1,15 @@
 #!/bin/bash
+# https://gist.github.com/anthonyaxenov/b8336a2bc9e6a742b5a050fa2588d71e
 #####################################################################
 #                                                                   #
 # Stupidly simple backup script for own projects                    #
 #                                                                   #
 # Author: Anthony Axenov (Антон Аксенов)                            #
 # Version: 1.0                                                      #
-# License: WTFPLv2    More info (RU): https://axenov.dev/?p=1234    #
+# License: WTFPLv2    More info: https://axenov.dev/?p=1423         #
 #                                                                   #
 #####################################################################
 
-# https://gist.github.com/anthonyaxenov/b8336a2bc9e6a742b5a050fa2588d71e
-
 # database credentials ==============================================
 
 DBUSER=
diff --git a/tools/rsync-backup.sh b/tools/rsync-backup.sh
new file mode 100755
index 0000000..96f868d
--- /dev/null
+++ b/tools/rsync-backup.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+
+RS_SRC_DEV=/dev/sdb1
+RS_DST_DEV=/dev/sdc1
+LOG_DIR="/home/$USER/rsync-logs"
+USE_NTFY=0
+NTFY_TITLE="Backup: $RS_SRC_DEV => $RS_DST_DEV"
+NTFY_CHANNEL=""
+
+log() {
+    [ ! -d "$LOG_DIR" ] && mkdir -p "$LOG_DIR"
+    echo -e "[`date '+%H:%M:%S'`] $*" | tee -a "$LOG_DIR/`date '+%Y%m%d'`.log"
+}
+
+# отправляет простую нотификацию
+ntfy_info() {
+    [ $USE_NTFY == 1 ] && ntfy send \
+        --title "$NTFY_TITLE" \
+        --message "$1" \
+        --priority 1 \
+        "$NTFY_CHANNEL"
+}
+
+# отправляет нотификацию с предупреждением
+ntfy_warn() {
+    [ $USE_NTFY == 1 ] && ntfy send \
+        --title "$NTFY_TITLE" \
+        --tags "warning" \
+        --message "$1" \
+        --priority 5 \
+        "$NTFY_CHANNEL"
+}
+
+log "START\t========================="
+
+mnt_check=$(findmnt -nf "$RS_SRC_DEV")
+if [ $? -gt 0 ]; then
+    log "Source partition '$RS_SRC_DEV' is not mounted. Exit 1."
+    exit 1
+fi
+
+RS_SRC_PATH=$(echo $mnt_check | awk '{ print $1 }')
+log "Source partition '$RS_SRC_DEV' is mounted at '$RS_SRC_PATH'"
+
+mnt_check=$(findmnt -nf "$RS_DST_DEV")
+if [ $? -gt 0 ]; then
+    log "Destination partition '$RS_DST_DEV' is not mounted. Exit 1."
+    exit 1
+fi
+
+RS_DST_PATH=$(echo $mnt_check | awk '{ print $1 }')
+log "Destination partition '$RS_DST_DEV' is mounted at '$RS_DST_PATH'"
+
+log "Executing rsync:"
+
+rsync -huva \
+    --progress \
+    --delete \
+    --exclude='lost+found' \
+    --exclude='.Trash' \
+    "$RS_SRC_PATH/" \
+    "$RS_DST_PATH/" \
+    | while read line; do log "$line"; done
+
+if [ $? -gt 0 ]; then
+    log "Something went wrong. Exit 3."
+    ntfy_warn "Something went wrong, check log"
+    exit 3
+fi
+ntfy_info "Success!"
+
+log "FINISH\t========================="
diff --git a/tools/s3-backup-old.sh b/tools/s3-backup-old.sh
new file mode 100755
index 0000000..b348bed
--- /dev/null
+++ b/tools/s3-backup-old.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+TTL_DAYS=1
+S3="s3://......"
+OLDER_THAN=$(date -d "$TTL_DAYS days ago" "+%s")
+echo $OLDER_THAN
+s3cmd ls -r $S3 | while read -r line; do
+    FILETIME=$(echo "$line" | awk {'print $1" "$2'})
+    FILETIME=$(date -d "$FILETIME" "+%s")
+    echo $FILETIME - $OLDER_THAN
+    if [[ $FILETIME -le $OLDER_THAN ]]; then
+        FILEPATH=$(echo "$line" | awk {'print $4'})
+        if [ $FILEPATH != "" ]; then
+            printf 'Must delete: %s\n' $FILEPATH
+            echo "s3cmd del $FILEPATH"
+        fi
+    fi
+done
diff --git a/tools/s3-backup.sh b/tools/s3-backup.sh
new file mode 100644
index 0000000..7edae02
--- /dev/null
+++ b/tools/s3-backup.sh
@@ -0,0 +1,342 @@
+#!/bin/bash
+#####################################################################
+#                                                                   #
+# Stupidly simple backup script for own projects                    #
+#                                                                   #
+# Author: Anthony Axenov (Антон Аксенов)                            #
+# Version: 1.2                                                      #
+# License: WTFPLv2                                                  #
+# More info (RU): https://axenov.dev/?p=1272                        #
+#                                                                   #
+#####################################################################
+
+# use remote storages ===============================================
+
+USE_SSH=1
+USE_S3=1
+
+# database credentials ==============================================
+
+DBUSER=
+DBPASS=
+DBNAME=
+DBCHARSET="utf8"
+
+# dates for file structure ==========================================
+
+TODAY_DIR="$(date +%Y.%m.%d)"
+TODAY_FILE="$(date +%H.%M)"
+
+# local storage =====================================================
+
+LOCAL_BAK_DIR="/backup"
+LOCAL_BAK_PATH="$LOCAL_BAK_DIR/$TODAY_DIR"
+
+# database backup file
+LOCAL_SQL_FILE="$TODAY_FILE-db.sql.gz"
+LOCAL_SQL_PATH="$LOCAL_BAK_PATH/$LOCAL_SQL_FILE"
+
+# project path and backup file
+LOCAL_SRC_DIR="/var/www/html"
+LOCAL_SRC_FILE="$TODAY_FILE-src.tar.gz"
+LOCAL_SRC_PATH="$LOCAL_BAK_PATH/$LOCAL_SRC_FILE"
+
+# log file
+LOG_FILE="$TODAY_FILE.log"
+LOG_PATH="$LOCAL_BAK_PATH/$LOG_FILE"
+
+# remote storages ===================================================
+
+SSH_HOST="user@example.com"
+SSH_BAK_DIR="/backup"
+SSH_BAK_PATH="$SSH_BAK_DIR/$TODAY_DIR"
+SSH_SQL_FILE="$SSH_BAK_PATH/$LOCAL_SQL_FILE"
+SSH_SRC_FILE="$SSH_BAK_PATH/$LOCAL_SRC_FILE"
+SSH_LOG_FILE="$SSH_BAK_PATH/$LOG_FILE"
+
+S3_BUCKET="s3://my.bucket"
+S3_DIR="$S3_BUCKET/$TODAY_DIR"
+S3_SQL_FILE="$S3_DIR/$LOCAL_SQL_FILE"
+S3_SRC_FILE="$S3_DIR/$LOCAL_SRC_FILE"
+S3_LOG_FILE="$S3_DIR/$LOG_FILE"
+
+# autoremove ========================================================
+
+# time to live on different storages
+TTL_LOCAL=3
+TTL_SSH=7
+TTL_S3=60
+
+# autoremove flags
+CLEAR_SSH=1
+CLEAR_S3=1
+
+# notifications =====================================================
+
+USE_NTFY=1
+NTFY_TITLE="Backup script"
+NTFY_CHANNEL=
+
+#====================================================================
+#
+# Functions used for the whole backup flow
+#
+#====================================================================
+
+# prints arguments to stdout and into log file
+log() {
+    echo -e "[$(date +%H:%M:%S)] $*" | tee -a "$LOG_PATH"
+}
+
+# sends notification with information
+ntfy_info() {
+    [ $USE_NTFY == 1 ] && ntfy send \
+        --title "$NTFY_TITLE" \
+        --message "$1" \
+        --priority 1 \
+        "$NTFY_CHANNEL"
+}
+
+# sends notification with warning
+ntfy_warn() {
+    [ $USE_NTFY == 1 ] && ntfy send \
+        --title "$NTFY_TITLE" \
+        --tags "warning" \
+        --message "$1" \
+        --priority 5 \
+        "$NTFY_CHANNEL"
+}
+
+# prints initialized parameters
+show_params() {
+    log "Initialized parameters:"
+
+    log "├ [ Remotes ]"
+    log "│\t├ USE_SSH = $USE_SSH"
+    [ $USE_SSH == 1 ] && log "│\t├ SSH_HOST = $SSH_HOST"
+    log "│\t├ USE_S3 = $USE_S3"
+    [ $USE_S3 == 1 ] && log "│\t├ S3_BUCKET = $S3_BUCKET"
+
+    log "├ [ Database ]"
+    log "│\t├ DBUSER = $DBUSER"
+    log "│\t├ DBNAME = $DBNAME"
+    log "│\t├ DBCHARSET = $DBCHARSET"
+    log "│\t├ LOCAL_SQL_PATH = $LOCAL_SQL_PATH"
+    [ $USE_SSH == 1 ] && log "│\t├ SSH_SQL_FILE = $SSH_SQL_FILE"
+    [ $USE_S3 == 1 ]  && log "│\t├ S3_SQL_FILE = $S3_SQL_FILE"
+
+    log "├ [ Sources ]"
+    log "│\t├ LOCAL_SRC_DIR = $LOCAL_SRC_DIR"
+    log "│\t├ LOCAL_SRC_PATH = $LOCAL_SRC_PATH"
+    [ $USE_SSH == 1 ] && log "│\t├ SSH_SRC_FILE = $SSH_SRC_FILE"
+    [ $USE_S3 == 1 ]  && log "│\t├ S3_SRC_FILE = $S3_SRC_FILE"
+
+    log "├ [ Log ]"
+    log "│\t├ LOG_PATH = $LOG_PATH"
+    [ $USE_SSH == 1 ] && log "│\t├ SSH_LOG_FILE = $SSH_LOG_FILE"
+    [ $USE_S3 == 1 ]  && log "│\t├ S3_LOG_FILE = $S3_LOG_FILE"
+
+    log "├ [ Autoclear ]"
+    log "│\t├ TTL_LOCAL = $TTL_LOCAL"
+    [ $USE_SSH == 1 ] && {
+        log "│\t├ CLEAR_SSH = $CLEAR_SSH"
+        log "│\t├ TTL_SSH = $TTL_SSH"
+    }
+    [ $USE_S3 == 1 ] && {
+        log "│\t├ CLEAR_S3 = $CLEAR_S3"
+        log "│\t├ TTL_S3 = $TTL_S3"
+    }
+
+    log "└ [ ntfy ]"
+    log "\t├ USE_NTFY = $USE_NTFY"
+    [ $USE_NTFY == 1 ] && log "\t├ NTFY_TITLE = $NTFY_TITLE"
+    [ $USE_NTFY == 1 ] && log "\t└ NTFY_CHANNEL = $NTFY_CHANNEL"
+}
+
+# initializes directories for backup
+init_dirs() {
+    if [ ! -d "$LOCAL_BAK_PATH" ]; then
+        mkdir -p $LOCAL_BAK_PATH
+    fi
+    [ $USE_SSH == 1 ] && ssh $SSH_HOST "mkdir -p $SSH_BAK_PATH"
+}
+
+# clears old local backups
+clear_local_backups() {
+    log "\tLocal:"
+    log $(find "$LOCAL_BAK_DIR" -type d -mtime +"$TTL_LOCAL" | sort)
+    find "$LOCAL_BAK_DIR" -type d -mtime +"$TTL_LOCAL" | xargs rm -rf
+}
+
+# clears old backups on remote ssh storage
+clear_ssh_backups() {
+    if [ $USE_SSH == 1 ] && [ $CLEAR_SSH == 1 ]; then
+        log "\tSSH:"
+        log $(ssh "$SSH_HOST" "find $SSH_BAK_DIR -type d -mtime +$TTL_SSH" | sort)
+        ssh "$SSH_HOST" "find $SSH_BAK_DIR -type d -mtime +$TTL_SSH | xargs rm -rf"
+    else
+        log "\tSSH: disabled (\$USE_SSH, \$CLEAR_SSH)"
+    fi
+}
+
+# clears backups on remote s3 storage
+clear_s3_backups() {
+    # https://gist.github.com/JProffitt71/9044744?permalink_comment_id=3539681#gistcomment-3539681
+    if [ $USE_S3 == 1 ] && [ $CLEAR_S3 == 1 ]; then
+        log "\tS3:"
+        OLDER_THAN=$(date -d "$TTL_S3 days ago" "+%s")
+        s3cmd ls -r $S3_DIR | while read -r line; do
+            FILETIME=$(echo "$line" | awk {'print $1" "$2'})
+            FILETIME=$(date -d "$FILETIME" "+%s")
+            if [[ $FILETIME -le $OLDER_THAN ]]; then
+                FILEPATH=$(echo "$line" | awk {'print $4'})
+                if [ $FILEPATH != "" ]; then
+                    log "$line"
+                    s3cmd del $FILEPATH
+                fi
+            fi
+        done
+    else
+        log "\tS3: disabled (\$USE_S3 + \$CLEAR_S3)"
+    fi
+}
+
+# clears old backups
+clear_backups() {
+    echo
+    log "1/7 Removing old backups..."
+    clear_local_backups
+    clear_ssh_backups
+    clear_s3_backups
+}
+
+# makes archive with database dump
+backup_db() {
+    echo
+    log "2/7 Dumping DB: $DBNAME..."
+    mysqldump \
+        --user=$DBUSER \
+        --password=$DBPASS \
+        --opt \
+        --default-character-set=$DBCHARSET \
+        --quick \
+        $DBNAME | gzip > $LOCAL_SQL_PATH
+    if [ $? == 0 ]; then
+        log "\t- OK"
+        send_db_ssh
+        send_db_s3
+    else
+        log "\t- ERROR: failed to create dump. Exit-code: $?"
+        ntfy_warn "ERROR: failed to create dump"
+        log "3/7 Sending database backup to $SSH_HOST... skipped"
+        log "4/7 Sending database backup to $S3_DIR... skipped"
+    fi
+}
+
+# sends database archive into ssh remote storage
+send_db_ssh() {
+    echo
+    log "3/7 Sending database backup to $SSH_HOST..."
+    if [ $USE_SSH == 1 ]; then
+        rsync --progress "$LOCAL_SQL_PATH" "$SSH_HOST:$SSH_SQL_FILE"
+        if [ $? == 0 ]; then
+            log "\t- OK"
+        else
+            log "\t- ERROR: failed to send DB backup to $SSH_HOST. Exit-code: $?"
+            ntfy_warn "ERROR: failed to send DB backup to $SSH_HOST"
+        fi
+    else
+        log "\t- disabled (\$USE_SSH)"
+    fi
+}
+
+# sends database archive into s3 remote storage
+send_db_s3() {
+    echo
+    log "4/7 Sending database backup to $S3_DIR..."
+    if [ $USE_S3 == 1 ]; then
+        s3cmd put "$LOCAL_SQL_PATH" "$S3_SQL_FILE"
+        if [ $? == 0 ]; then
+            log "\t- OK"
+        else
+            log "\t- ERROR: failed to send DB backup to $S3_DIR. Exit-code: $?"
+            ntfy_warn "ERROR: failed to send DB backup to $S3_DIR"
+        fi
+    else
+        log "\t- disabled (\$USE_SSH)"
+    fi
+}
+
+# makes archive with project sources
+backup_src() {
+    echo
+    log "5/7 Compressing project dir: $LOCAL_SRC_DIR..."
+    tar -zcf "$LOCAL_SRC_PATH" "$LOCAL_SRC_DIR"
+    if [ $? == 0 ]; then
+        log "\t- OK"
+        send_src_ssh
+        send_src_s3
+    else
+        log "\t- ERROR: failed to compress project. Exit-code: $?"
+        ntfy_warn "ERROR: failed to compress project"
+        log "6/7 Sending project backup to $SSH_HOST... skipped"
+        log "7/7 Sending project backup to $S3_DIR... skipped"
+    fi
+}
+
+# sends sources archive into ssh remote storage
+send_src_ssh() {
+    echo
+    log "6/7 Sending project backup to $SSH_HOST..."
+    if [ $USE_SSH == 1 ]; then
+        rsync --progress "$LOCAL_SRC_PATH" "$SSH_HOST:$SSH_SRC_FILE"
+        if [ $? == 0 ]; then
+            log "\t- OK"
+        else
+            log "\t- ERROR: failed to send project backup to $SSH_HOST. Exit-code: $?"
+            ntfy_warn "ERROR: failed to send project backup to $SSH_HOST"
+        fi
+    else
+        log "\t- disabled"
+    fi
+}
+
+# sends sources archive into s3 remote storage
+send_src_s3() {
+    echo
+    log "7/7 Sending project backup to $S3_DIR..."
+    s3cmd put "$LOCAL_SRC_PATH" "$S3_SRC_FILE"
+    if [ $? == 0 ]; then
+        log "\t- OK"
+    else
+        log "\t- ERROR: failed to send database backup to $S3_DIR. Exit-code: $?"
+        ntfy_warn "ERROR: failed to send project backup to $S3_DIR"
+    fi
+}
+
+# prints used/free space on local storage
+show_finish() {
+    echo
+    log "Finish!"
+    log "Used space: $(du -h "$LOCAL_BAK_PATH" | tail -n1)" # вывод размера папки с бэкапами за текущий день
+    log "Free space: $(df -h "$LOCAL_BAK_PATH" | tail -n1 | awk '{print $4}')" # вывод свободного места на локальном диске
+    echo
+}
+
+# sends log file into both remote storage
+send_log() {
+    [ $USE_SSH == 1 ] && rsync --progress "$LOG_PATH" "$SSH_HOST:$SSH_LOG_FILE"
+    [ $USE_S3 == 1 ] && s3cmd put "$LOG_PATH" "$S3_LOG_FILE"
+}
+
+# main flow =========================================================
+
+log "Start ----------------------------------------------------------"
+show_params
+init_dirs
+clear_backups
+backup_db
+backup_src
+show_finish
+send_log
+ntfy_info "Finish!"
diff --git a/tools/setup-wakeonlan.sh b/tools/setup-wakeonlan.sh
new file mode 100755
index 0000000..b8e50ad
--- /dev/null
+++ b/tools/setup-wakeonlan.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+
+print() {
+    echo -e "$*"
+}
+
+state() {
+    sudo ethtool "$iface" | grep -E '^\s+Wake-on:\s\w+' | awk '{print $2}'
+}
+
+[ "$1" ] && iface="$1" || iface=enp3s0
+
+[ -f "/sys/class/net/$iface/address" ] && mac=$(cat "/sys/class/net/$iface/address") || mac=''
+[ -z "$mac" ] && {
+    print "Wrong interface! $iface" >&2
+    exit 1
+}
+
+state=$(state)
+
+print "Interface\t: $iface"
+print "MAC-address\t: $mac"
+print "WoL state\t: $state"
+
+if [ $state == 'd' ]; then
+    sudo ethtool -s "$iface" wol gu || true
+    sudo mkdir -p /etc/networkd-dispatcher/configuring.d
+    sudo tee /etc/networkd-dispatcher/configuring.d/wol <<EOF >/dev/null
+#!/usr/bin/env bash
+
+ethtool -s $iface wol gu || true
+EOF
+    sudo chmod 755 /etc/networkd-dispatcher/configuring.d/wol
+    print "* New WOL state\t: $(state)"
+fi
+
+print "\nTo wake up this device run this command from another one:\n"
+print "\twakeonlan -p 8 $mac\n"
+print "\twol $mac\n"
+
diff --git a/tools/upgrade-ubuntu.sh b/tools/upgrade-ubuntu.sh
new file mode 100755
index 0000000..b4671d6
--- /dev/null
+++ b/tools/upgrade-ubuntu.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+# https://dev.to/chefgs/upgrading-an-end-of-life-eol-ubuntu-os-to-lts-version-3a36
+# https://changelogs.ubuntu.com/meta-release
+
+installed() {
+    command -v "$1" >/dev/null 2>&1
+}
+
+# sudo software-properties-qt (переключиться с LTS на нормальные релизы)
+# sudo aptitude install update-manager-core update-manager
+# sudo apt upgrade --autoremove -y
+# installed pkcon && sudo pkcon update --autoremove -y
+# sudo apt dist-upgrade
+# sudo apt install update-manager-core
+# sudo do-release-upgrade -p
+
+source /etc/os-release
+
+echo "Loading..."
+
+IFS=$'\n' codenames=($(curl -s https://changelogs.ubuntu.com/meta-release | grep -xP "^Dist:\s[\w]+$" | sed "s/Dist: //" ))
+thisCodename="$VERSION_CODENAME"
+for idx in "${!codenames[@]}"; do
+    if [ "${codenames[idx]}" = "$thisCodename" ]; then
+        nextCodename=${codenames[((idx+1))]}
+    fi
+done
+
+targetDownloadPath="`pwd`/upgrade-$nextCodename"
+targetToolPath="$targetDownloadPath/unpacked"
+targetToolFile="$targetDownloadPath/$nextCodename.tar.gz"
+
+echo "Current dist: $thisCodename"
+echo "Next dist:    $nextCodename"
+echo "Target path:  $targetToolFile"
+
+rm -rf "$targetToolPath"
+mkdir -p "$targetToolPath"
+
+echo "Downloading..."
+cd "$targetDownloadPath"
+wget "http://archive.ubuntu.com/ubuntu/dists/${nextCodename}-updates/main/dist-upgrader-all/current/${nextCodename}.tar.gz"
+
+echo "Unpacking..."
+tar -xaf "$targetToolFile" -C "$targetToolPath"
+
+echo "Starting..."
+cd unpacked
+sudo ./$nextCodename
diff --git a/tools/vscode-ext.sh b/tools/vscode-ext.sh
new file mode 100644
index 0000000..d5d4e24
--- /dev/null
+++ b/tools/vscode-ext.sh
@@ -0,0 +1,82 @@
+#!/bin/bash
+exts=(
+    'af4jm.vscode-m3u'
+    'ahmadalli.vscode-nginx-conf'
+    'akamud.vscode-theme-onedark'
+    'anweber.statusbar-commands'
+    'baincd.mini-command-palettes'
+    'bmewburn.vscode-intelephense-client'
+    'codezombiech.gitignore'
+    'cweijan.vscode-redis-client'
+    'darkriszty.markdown-table-prettify'
+    'davidmarek.jsonpath-extract'
+    'deitry.apt-source-list-syntax'
+    'devsense.composer-php-vscode'
+    'devsense.intelli-php-vscode'
+    'devsense.phptools-vscode'
+    'devsense.profiler-php-vscode'
+    'dotjoshjohnson.xml'
+    'dunstontc.vscode-go-syntax'
+    'dustypomerleau.rust-syntax'
+    'eamodio.gitlens'
+    'editorconfig.editorconfig'
+    'esbenp.prettier-vscode'
+    'furkanozalp.go-syntax'
+    'gigacode.gigacode-vscode'
+    'golang.go'
+    'grapecity.gc-excelviewer'
+    'humao.rest-client'
+    'irongeek.vscode-env'
+    'jebbs.plantuml'
+    'jeff-hykin.better-go-syntax'
+    'jeppeandersen.vscode-kafka'
+    'jflbr.jwt-decoder'
+    'jinsihou.diff-tool'
+    'jtr.vscode-position'
+    'kenhowardpdx.vscode-gist'
+    'leavesster.jsonpath'
+    'mads-hartmann.bash-ide-vscode'
+    'mamoru.vscode-fish-text'
+    'mechatroner.rainbow-csv'
+    'mehedidracula.php-namespace-resolver'
+    'mhutchie.git-graph'
+    'mrmlnc.vscode-apache'
+    'ms-azuretools.vscode-docker'
+    'ms-ceintl.vscode-language-pack-ru'
+    'ms-vscode.hexeditor'
+    'ms-vscode.makefile-tools'
+    'neilbrayfield.php-docblocker'
+    'neonxp.gotools'
+    'nickdemayo.vscode-json-editor'
+    'nico-castell.linux-desktop-file'
+    'open-rpc.open-rpc'
+    'pejmannikram.vscode-auto-scroll'
+    'pkief.material-icon-theme'
+    'qcz.text-power-tools'
+    'rogalmic.bash-debug'
+    'rust-lang.rust-analyzer'
+    'ryu1kn.partial-diff'
+    'srmeyers.git-prefix'
+    'sumneko.lua'
+    'syler.ignore'
+    'takumii.markdowntable'
+    'tamasfe.even-better-toml'
+    'tyriar.lorem-ipsum'
+    'vitorsalgado.vscode-redis'
+    'waderyan.gitblame'
+    'wayou.vscode-todo-highlight'
+    'weijunyu.vscode-json-path'
+    'xdebug.php-debug'
+    'yinfei.luahelper'
+    'yog.yog-plantuml-highlight'
+    'yves.schema-tree'
+    'yzane.markdown-pdf'
+    'yzhang.markdown-all-in-one'
+    'zgm.cuesheet'
+    'zh9528.file-size'
+    'zobo.php-intellisense'
+)
+
+for ext in "$exts[@]"; do
+    code --install-extension $ext
+done
diff --git a/tools/ytdlcue.sh b/tools/ytdlcue.sh
old mode 100755
new mode 100644
diff --git a/uninstall/apache2 b/uninstall/apache2
index b6e725e..d08699e 100755
--- a/uninstall/apache2
+++ b/uninstall/apache2
@@ -1,13 +1,10 @@
 #!/bin/bash
 ##makedesc: Uninstall apache2
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title
 
-sudo apt remove -y --autoremove apache2
+apt_remove apache2
+
+success "apache2 removed!"
 
-[ $? = 0 ] && {
-    echo
-    success "apache2 uninstalled!"
-    echo
-}
diff --git a/uninstall/canon-mg2500 b/uninstall/canon-mg2500
new file mode 100755
index 0000000..2b3623d
--- /dev/null
+++ b/uninstall/canon-mg2500
@@ -0,0 +1,15 @@
+#!/bin/bash
+##makedesc: Uninstall Canon Pixma MG2500 + ppa
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
+
+title
+
+apt_ppa_remove ppa:thierry-f/fork-michael-gruz
+
+dpkg_remove cnijfilter-mg2500series
+dpkg_remove cnijfilter-common
+dpkg_remove scangearmp-mg2500series
+dpkg_remove scangearmp-common
+
+success "Drivers for Canon Pixma MG2500 removed!"
+
diff --git a/uninstall/chrome b/uninstall/chrome
new file mode 100755
index 0000000..f030a7a
--- /dev/null
+++ b/uninstall/chrome
@@ -0,0 +1,9 @@
+#!/bin/bash
+##makedesc: Uninstall google chrome
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
+
+title
+
+dpkg_remove google-chrome-stable
+
+success "Google Chrome removed!"
diff --git a/uninstall/composer b/uninstall/composer
new file mode 100755
index 0000000..46da440
--- /dev/null
+++ b/uninstall/composer
@@ -0,0 +1,17 @@
+#!/bin/bash
+##makedesc: Uninstall composer
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
+
+title
+
+apt_remove composer
+
+sudo rm -f \
+    "$HOME/.local/bin/composer" \
+    /bin/composer \
+    /usr/bin/composer \
+    /usr/local/bin/composer \
+    /usr/src/composer \
+
+success "composer removed!"
+
diff --git a/uninstall/docker b/uninstall/docker
index 31c6d42..c110cfd 100755
--- a/uninstall/docker
+++ b/uninstall/docker
@@ -1,16 +1,21 @@
 #!/bin/bash
 ##makedesc: Uninstall docker + ppa
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
-echo
-echo "==============================================="
-echo "Uninstalling docker + ppa..."
-echo "==============================================="
-echo
+title
 
-sudo apt remove -y docker*
+apt_remove -y \
+    docker-ce \
+    docker-ce-cli \
+    containerd.io \
+    docker-buildx-plugin \
+    docker-compose-plugin \
+    docker-ce-rootless-extras
 
-rm -rf \
+sudo rm -rf \
+    /var/lib/docker \
+    /var/lib/containerd \
     /etc/apt/sources.list.d/docker.list \
-    /etc/apt/keyrings/docker.gpg
+    /etc/apt/keyrings/docker.asc
 
-sudo apt update
+apt_update
diff --git a/uninstall/grub-customizer b/uninstall/grub-customizer
index f6b0b71..292a4ca 100755
--- a/uninstall/grub-customizer
+++ b/uninstall/grub-customizer
@@ -1,6 +1,6 @@
 #!/bin/bash
 ##makedesc: Uninstall grub-customizer with ppa
-source `dirname $0`/../helpers || exit 255
+source "$( dirname $(readlink -e -- "${BASH_SOURCE}"))/../helpers.sh" || exit 255
 
 title