diff --git a/dkms-make.sh b/dkms-make.sh
index c571ad8..0689c87 100755
--- a/dkms-make.sh
+++ b/dkms-make.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # SMEM needs to be set here if dkms build is not initiated by install-driver.sh
 SMEM=$(LANG=C free | awk '/Mem:/ { print $2 }')
@@ -7,10 +7,8 @@ SMEM=$(LANG=C free | awk '/Mem:/ { print $2 }')
 sproc=$(nproc)
 
 # Avoid Out of Memory condition in low-RAM systems by limiting core usage.
-if [ "$sproc" -gt 1 ]
-then
-	if [ "$SMEM" -lt 1400000 ]
-	then
+if [ "$sproc" -gt 1 ]; then
+	if [ "$SMEM" -lt 1400000 ]; then
 		sproc=2
 	fi
 fi
diff --git a/edit-options.sh b/edit-options.sh
index 7316127..aa9af3a 100755
--- a/edit-options.sh
+++ b/edit-options.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Purpose: Make it easier to edit the driver options file.
 #
@@ -26,42 +26,37 @@
 SCRIPT_NAME="edit-options.sh"
 SCRIPT_VERSION="20230120"
 OPTIONS_FILE="8821cu.conf"
-DEFAULT_EDITOR="$(<default-editor.txt)"
-EDITORS_SEARCH=("${VISUAL}" "${EDITOR}" "${DEFAULT_EDITOR}" "vi")
+DEFAULT_EDITOR="$(cat default-editor.txt)"
 
-if [[ $EUID -ne 0 ]]
-then
+if [ "$(id -u)" -ne 0 ]; then
 	echo "You must run this script with superuser (root) privileges."
 	echo "Try: \"sudo ./${SCRIPT_NAME}\""
 	exit 1
 fi
 
 # Try to find the user's default text editor through the EDITORS_SEARCH array
-for editor in ${EDITORS_SEARCH[@]}
-do
-        if command -v "${editor}" >/dev/null 2>&1
-        then
-                TEXT_EDITOR="${editor}"
-                break
-        fi
+for TEXT_EDITOR in "${VISUAL}" "${EDITOR}" "${DEFAULT_EDITOR}" vi; do
+        command -v "${TEXT_EDITOR}" >/dev/null 2>&1 && break
 done
 
 # Fail if no editor was found
-if ! command -v "${TEXT_EDITOR}" >/dev/null 2>&1
-then
+if ! command -v "${TEXT_EDITOR}" >/dev/null 2>&1; then
         echo "No text editor found (default: ${DEFAULT_EDITOR})."
         echo "Please install ${DEFAULT_EDITOR} or edit the file 'default-editor.txt' to specify your editor."
         echo "Once complete, please run \"sudo ./${SCRIPT_NAME}\""
         exit 1
 fi
 
+# displays script name and version
+echo ": ${SCRIPT_NAME} v${SCRIPT_VERSION}"
+
 ${TEXT_EDITOR} /etc/modprobe.d/${OPTIONS_FILE}
 
-read -p "Do you want to apply the new options by rebooting now? [y/N] " -n 1 -r
+printf "Do you want to apply the new options by rebooting now? [y/N] "
+read -r REPLY
 echo    # move to a new line
-if [[ $REPLY =~ ^[Yy]$ ]]
-then
-    reboot
-fi
+case "$REPLY" in
+	[yY]*) reboot ;;
+esac
 
 exit 0
diff --git a/install-driver.sh b/install-driver.sh
index dca23a6..5c6e1a9 100755
--- a/install-driver.sh
+++ b/install-driver.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Purpose: Install Realtek out-of-kernel USB WiFi adapter drivers.
 #
@@ -38,12 +38,10 @@ OPTIONS_FILE="${MODULE_NAME}.conf"
 
 SMEM=$(LANG=C free | awk '/Mem:/ { print $2 }')
 sproc=$(nproc)
-DEFAULT_EDITOR="$(<default-editor.txt)"
-EDITORS_SEARCH=("${VISUAL}" "${EDITOR}" "${DEFAULT_EDITOR}" "vi")
+DEFAULT_EDITOR="$(cat default-editor.txt)"
 
 # check to ensure sudo was used
-if [[ $EUID -ne 0 ]]
-then
+if [ "$(id -u)" -ne 0 ]; then
 	echo "You must run this script with superuser (root) privileges."
 	echo "Try: \"sudo ./${SCRIPT_NAME}\""
 	exit 1
@@ -55,8 +53,7 @@ if ! echo "$PATH" | grep -qw sbin; then
 fi
 
 # check to ensure gcc is installed
-if ! command -v gcc >/dev/null 2>&1
-then
+if ! command -v gcc >/dev/null 2>&1; then
 	echo "A required package is not installed."
 	echo "Please install the following package: gcc"
 	echo "Once the package is installed, please run \"sudo ./${SCRIPT_NAME}\""
@@ -64,8 +61,7 @@ then
 fi
 
 # check to ensure make is installed
-if ! command -v make >/dev/null 2>&1
-then
+if ! command -v make >/dev/null 2>&1; then
 	echo "A required package is not installed."
 	echo "Please install the following package: make"
 	echo "Once the package is installed, please run \"sudo ./${SCRIPT_NAME}\""
@@ -81,8 +77,7 @@ if [ ! -d "/lib/modules/$(uname -r)/build" ]; then
 fi
 
 # check to ensure iw is installed
-if ! command -v iw >/dev/null 2>&1
-then
+if ! command -v iw >/dev/null 2>&1; then
 	echo "A required package is not installed."
 	echo "Please install the following package: iw"
 	echo "Once the package is installed, please run \"sudo ./${SCRIPT_NAME}\""
@@ -90,8 +85,7 @@ then
 fi
 
 # check to ensure rfkill is installed
-if ! command -v rfkill >/dev/null 2>&1
-then
+if ! command -v rfkill >/dev/null 2>&1; then
 	echo "A required package is not installed."
 	echo "Please install the following package: rfkill"
 	echo "Once the package is installed, please run \"sudo ./${SCRIPT_NAME}\""
@@ -99,18 +93,12 @@ then
 fi
 
 # Try to find the user's default text editor through the EDITORS_SEARCH array
-for editor in ${EDITORS_SEARCH[@]}
-do
-	if command -v "${editor}" >/dev/null 2>&1
-	then
-		TEXT_EDITOR="${editor}"
-		break
-	fi
+for TEXT_EDITOR in "${VISUAL}" "${EDITOR}" "${DEFAULT_EDITOR}" vi; do
+	command -v "${TEXT_EDITOR}" >/dev/null 2>&1 && break
 done
 
 # Fail if no editor was found
-if ! command -v "${TEXT_EDITOR}" >/dev/null 2>&1
-then
+if ! command -v "${TEXT_EDITOR}" >/dev/null 2>&1; then
         echo "No text editor found (default: ${DEFAULT_EDITOR})."
         echo "Please install ${DEFAULT_EDITOR} or edit the file 'default-editor.txt' to specify your editor."
         echo "Once complete, please run \"sudo ./${SCRIPT_NAME}\""
@@ -121,8 +109,7 @@ fi
 NO_PROMPT=0
 
 # get the script options
-while [ $# -gt 0 ]
-do
+while [ $# -gt 0 ]; do
 	case $1 in
 		NoPrompt)
 			NO_PROMPT=1 ;;
@@ -150,8 +137,7 @@ echo ": ${KARCH} (ARCH)"
 echo ": ${SMEM} (SMEM)"
 
 # Avoid Out of Memory condition in low-RAM systems by limiting core usage.
-if [ "$sproc" -gt 1 ]
-then
+if [ "$sproc" -gt 1 ]; then
 	if [ "$SMEM" -lt 1400000 ]
 	then
 		sproc=2
@@ -165,20 +151,18 @@ echo ": ${KVER} (KVER)"
 
 # display gcc version
 gcc_ver=$(gcc --version | grep -i gcc)
-echo ": "${gcc_ver}
+echo ": ${gcc_ver}"
 
 # display dkms version if installed
-if command -v dkms >/dev/null 2>&1
-then
+if command -v dkms >/dev/null 2>&1; then
 	dkms_ver=$(dkms --version)
-	echo ": "${dkms_ver}
+	echo ": ${dkms_ver}"
 fi
 
 # display secure mode status if mokutil is installed
-if command -v mokutil >/dev/null 2>&1
-then
+if command -v mokutil >/dev/null 2>&1; then
 	sb_state=$(mokutil --sb-state)
-	echo ": "${sb_state}
+	echo ": ${sb_state}"
 fi
 
 echo ": ---------------------------"
@@ -195,11 +179,10 @@ echo ": ---------------------------"
 
 # check for and remove non-dkms installations
 # standard naming
-if [[ -f "${MODDESTDIR}${MODULE_NAME}.ko" ]]
-then
+if [ -f "${MODDESTDIR}${MODULE_NAME}.ko" ]; then
 	echo "Removing a non-dkms installation: ${MODDESTDIR}${MODULE_NAME}.ko"
-	rm -f ${MODDESTDIR}${MODULE_NAME}.ko
-	/sbin/depmod -a ${KVER}
+	rm -f "${MODDESTDIR}${MODULE_NAME}.ko"
+	/sbin/depmod -a "${KVER}"
 	echo "Removing ${OPTIONS_FILE} from /etc/modprobe.d"
 	rm -f /etc/modprobe.d/${OPTIONS_FILE}
 	echo "Removing source files from /usr/src/${DRV_NAME}-${DRV_VERSION}"
@@ -209,11 +192,10 @@ fi
 
 # check for and remove non-dkms installations
 # with rtl added to module name (PClinuxOS)
-if [[ -f "${MODDESTDIR}rtl${MODULE_NAME}.ko" ]]
-then
+if [ -f "${MODDESTDIR}rtl${MODULE_NAME}.ko" ]; then
 	echo "Removing a non-dkms installation: ${MODDESTDIR}rtl${MODULE_NAME}.ko"
-	rm -f ${MODDESTDIR}rtl${MODULE_NAME}.ko
-	/sbin/depmod -a ${KVER}
+	rm -f "${MODDESTDIR}rtl${MODULE_NAME}.ko"
+	/sbin/depmod -a "${KVER}"
 	echo "Removing ${OPTIONS_FILE} from /etc/modprobe.d"
 	rm -f /etc/modprobe.d/${OPTIONS_FILE}
 	echo "Removing source files from /usr/src/${DRV_NAME}-${DRV_VERSION}"
@@ -225,11 +207,10 @@ fi
 # with compressed module in a unique non-standard location (Armbian)
 # Example: /usr/lib/modules/5.15.80-rockchip64/kernel/drivers/net/wireless/rtl8821cu/8821cu.ko.xz
 # Dear Armbiam, this is a really bad idea.
-if [[ -f "/usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz" ]]
-then
+if [ -f "/usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz" ]; then
 	echo "Removing a non-dkms installation: /usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz"
-	rm -f /usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz
-	/sbin/depmod -a ${KVER}
+	rm -f "/usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz"
+	/sbin/depmod -a "${KVER}"
 	echo "Removing ${OPTIONS_FILE} from /etc/modprobe.d"
 	rm -f /etc/modprobe.d/${OPTIONS_FILE}
 	echo "Removing source files from /usr/src/${DRV_NAME}-${DRV_VERSION}"
@@ -238,10 +219,8 @@ then
 fi
 
 # check for and remove dkms installations
-if command -v dkms >/dev/null 2>&1
-then
-	if dkms status | grep -i  ${DRV_NAME}
-	then
+if command -v dkms >/dev/null 2>&1; then
+	if dkms status | grep -i  ${DRV_NAME}; then
 		echo "Removing a dkms installation: ${DRV_NAME}"
 		dkms remove -m ${DRV_NAME} -v ${DRV_VERSION} --all
 		echo "Removing ${OPTIONS_FILE} from /etc/modprobe.d"
@@ -256,17 +235,15 @@ echo "Installing ${OPTIONS_FILE} to /etc/modprobe.d"
 cp -f ${OPTIONS_FILE} /etc/modprobe.d
 
 # determine if dkms is installed and run the appropriate routines
-if ! command -v dkms >/dev/null 2>&1
-then
+if ! command -v dkms >/dev/null 2>&1; then
 	echo "The non-dkms installation routines are in use."
 
 	make clean >/dev/null 2>&1
 
-	make -j$(nproc)
+	make "-j$(nproc)"
 	RESULT=$?
 
-	if [[ "$RESULT" != "0" ]]
-	then
+	if [ "$RESULT" != "0" ]; then
 		echo "An error occurred:  ${RESULT}"
 		echo "Please report this error."
 		echo "Please copy all screen output and paste it into the problem report."
@@ -282,8 +259,7 @@ then
 	make install
 	RESULT=$?
 
-	if [[ "$RESULT" = "0" ]]
-	then
+	if [ "$RESULT" = "0" ]; then
         	make clean >/dev/null 2>&1
 		echo "The driver was installed successfully."
 	else
@@ -306,10 +282,8 @@ else
 
 #	RESULT will be 3 if the DKMS tree already contains the same module/version
 #	combo. You cannot add the same module/version combo more than once.
-	if [[ "$RESULT" != "0" ]]
-	then
-		if [[ "$RESULT" = "3" ]]
-		then
+	if [ "$RESULT" != "0" ]; then
+		if [ "$RESULT" = "3" ]; then
 			echo "This driver may already be installed."
 			echo "Run the following and then reattempt installation."
 			echo "$ sudo ./remove-driver.sh"
@@ -326,16 +300,14 @@ else
 		echo "The driver was added to dkms successfully."
 	fi
 
-	if command -v /usr/bin/time >/dev/null 2>&1
-	then
+	if command -v /usr/bin/time >/dev/null 2>&1; then
 		/usr/bin/time -f "Compile time: %U seconds" dkms build -m ${DRV_NAME} -v ${DRV_VERSION}
 	else
 		dkms build -m ${DRV_NAME} -v ${DRV_VERSION}
 	fi
 	RESULT=$?
 
-	if [[ "$RESULT" != "0" ]]
-	then
+	if [ "$RESULT" != "0" ]; then
 		echo "An error occurred. dkms build error:  ${RESULT}"
 		echo "Please report this error."
 		echo "Please copy all screen output and paste it into the problem report."
@@ -349,8 +321,7 @@ else
 	dkms install -m ${DRV_NAME} -v ${DRV_VERSION}
 	RESULT=$?
 
-	if [[ "$RESULT" != "0" ]]
-	then
+	if [ "$RESULT" != "0" ]; then
 		echo "An error occurred. dkms install error:  ${RESULT}"
 		echo "Please report this error."
 		echo "Please copy all screen output and paste it into the problem report."
@@ -363,29 +334,27 @@ else
 fi
 
 # unblock wifi
-if command -v rfkill >/dev/null 2>&1
-then
+if command -v rfkill >/dev/null 2>&1; then
 	rfkill unblock wlan
 else
 	echo "Unable to run $ rfkill unblock wlan"
 fi
 
 # if NoPrompt is not used, ask user some questions
-if [ $NO_PROMPT -ne 1 ]
-then
-	read -p "Do you want to edit the driver options file now? [y/N] " -n 1 -r
+if [ $NO_PROMPT -ne 1 ]; then
+	printf "Do you want to edit the driver options file now? [y/N] "
+	read -r REPLY
 	echo
-	if [[ $REPLY =~ ^[Yy]$ ]]
-	then
-		${TEXT_EDITOR} /etc/modprobe.d/${OPTIONS_FILE}
-	fi
+	case "$REPLY" in
+		[yY]*) ${TEXT_EDITOR} /etc/modprobe.d/${OPTIONS_FILE} ;;
+	esac
 
-	read -p "Do you want to reboot now? (recommended) [y/N] " -n 1 -r
+	printf "Do you want to reboot now? (recommended) [y/N] "
+	read -r REPLY
 	echo
-	if [[ $REPLY =~ ^[Yy]$ ]]
-	then
-		reboot
-	fi
+	case "$REPLY" in
+		[yY]*) reboot ;;
+	esac
 fi
 
 exit 0
diff --git a/remove-driver.sh b/remove-driver.sh
index d9a3699..7131eda 100755
--- a/remove-driver.sh
+++ b/remove-driver.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Purpose: Remove Realtek out-of-kernel USB WiFi adapter drivers.
 #
@@ -33,12 +33,10 @@ KARCH="$(uname -m)"
 MODDESTDIR="/lib/modules/${KVER}/kernel/drivers/net/wireless/"
 
 DRV_NAME="rtl${MODULE_NAME}"
-DRV_DIR="$(pwd)"
 OPTIONS_FILE="${MODULE_NAME}.conf"
 
 # check to ensure sudo was used
-if [[ $EUID -ne 0 ]]
-then
+if [ "$(id -u)" -ne 0 ]; then
 	echo "You must run this script with superuser (root) privileges."
 	echo "Try: \"sudo ./${SCRIPT_NAME}\""
 	exit 1
@@ -48,8 +46,7 @@ fi
 NO_PROMPT=0
 
 # get the script options
-while [ $# -gt 0 ]
-do
+while [ $# -gt 0 ]; do
 	case $1 in
 		NoPrompt)
 			NO_PROMPT=1 ;;
@@ -68,31 +65,28 @@ echo ": ${SCRIPT_NAME} v${SCRIPT_VERSION}"
 
 # check for and remove non-dkms installations
 # standard naming
-if [[ -f "${MODDESTDIR}${MODULE_NAME}.ko" ]]
-then
+if [ -f "${MODDESTDIR}${MODULE_NAME}.ko" ]; then
 	echo "Removing a non-dkms installation: ${MODDESTDIR}${MODULE_NAME}.ko"
-	rm -f ${MODDESTDIR}${MODULE_NAME}.ko
-	/sbin/depmod -a ${KVER}
+	rm -f "${MODDESTDIR}${MODULE_NAME}.ko"
+	/sbin/depmod -a "${KVER}"
 fi
 
 # check for and remove non-dkms installations
 # with rtl added to module name (PClinuxOS)
-if [[ -f "${MODDESTDIR}rtl${MODULE_NAME}.ko" ]]
-then
+if [ -f "${MODDESTDIR}rtl${MODULE_NAME}.ko" ]; then
 	echo "Removing a non-dkms installation: ${MODDESTDIR}rtl${MODULE_NAME}.ko"
-	rm -f ${MODDESTDIR}rtl${MODULE_NAME}.ko
-	/sbin/depmod -a ${KVER}
+	rm -f "${MODDESTDIR}rtl${MODULE_NAME}.ko"
+	/sbin/depmod -a "${KVER}"
 fi
 
 # check for and remove non-dkms installations
 # with compressed module in a unique non-standard location (Armbian)
 # Example: /usr/lib/modules/5.15.80-rockchip64/kernel/drivers/net/wireless/rtl8821cu/8821cu.ko.xz
 # Dear Armbiam, this is a really bad idea.
-if [[ -f "/usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz" ]]
-then
+if [ -f "/usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz" ]; then
 	echo "Removing a non-dkms installation: /usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz"
-	rm -f /usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz
-	/sbin/depmod -a ${KVER}
+	rm -f "/usr/lib/modules/${KVER}/kernel/drivers/net/wireless/${DRV_NAME}/${MODULE_NAME}.ko.xz"
+	/sbin/depmod -a "${KVER}"
 fi
 
 # information that helps with bug reports
@@ -104,8 +98,7 @@ echo ": ${KVER}"
 echo ": ${KARCH}"
 
 # determine if dkms is installed and run the appropriate routines
-if command -v dkms >/dev/null 2>&1
-then
+if command -v dkms >/dev/null 2>&1; then
 	echo "Removing a dkms installation."
 	#  2>/dev/null suppresses the output of dkms
 	dkms remove -m ${DRV_NAME} -v ${DRV_VERSION} --all 2>/dev/null
@@ -115,10 +108,8 @@ then
 	# RESULT will be 3 if there are no instances of module to remove
 	# however we still need to remove various files or the install script
 	# may complain.
-	if [[ ("$RESULT" = "0")||("$RESULT" = "3") ]]
-	then
-		if [[ ("$RESULT" = "0") ]]
-		then
+	if [ "$RESULT" = "0" ] || [ "$RESULT" = "3" ]; then
+		if [ "$RESULT" = "0" ]; then
 			echo "${DRV_NAME}/${DRV_VERSION} has been removed"
 		fi
 	else
@@ -137,14 +128,13 @@ echo "The driver was removed successfully."
 echo "You may now delete the driver directory if desired."
 
 # if NoPrompt is not used, ask user some questions
-if [ $NO_PROMPT -ne 1 ]
-then
-	read -p "Do you want to reboot now? (recommended) [y/N] " -n 1 -r
+if [ $NO_PROMPT -ne 1 ]; then
+	printf "Do you want to reboot now? (recommended) [y/N] "
+	read -r REPLY
 	echo
-	if [[ $REPLY =~ ^[Yy]$ ]]
-	then
-		reboot
-	fi
+	case "$REPLY" in
+		[yY]*) reboot ;;
+	esac
 fi
 
 exit 0
diff --git a/save-log.sh b/save-log.sh
index 4957198..e3afbe8 100755
--- a/save-log.sh
+++ b/save-log.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 SCRIPT_NAME="save-log.sh"
 #
@@ -12,7 +12,7 @@ SCRIPT_NAME="save-log.sh"
 #
 # $ sudo ./edit-options.sh
 #
-if [[ $EUID -ne 0 ]]; then
+if [ "$(id -u)" -ne 0 ]; then
 	echo "You must run this script with superuser (root) privileges."
 	echo "Try: \"sudo ./${SCRIPT_NAME}\""
 	exit 1
@@ -24,7 +24,7 @@ rm -f -- rtw.log
 dmesg | cut -d"]" -f2- | grep "RTW" >> rtw.log
 RESULT=$?
 
-if [[ "$RESULT" != "0" ]]; then
+if [ "$RESULT" != "0" ]; then
 	echo "An error occurred while running: ${SCRIPT_NAME}"
 	echo "Did you set a log level > 0 ?"
 	exit 1