wip3

install/apt

@@ -1,8 +1,22 @@
 #!/usr/bin/env bash
 ##makedesc: Install basic software from apt
 
-sudo apt update && \
-    sudo apt upgrade -y --autoremove && \
+set -eo pipefail
+
+if [ "$(uname -s)" = "Darwin" ]; then
+    echo "ERROR: This script is for Debian/Ubuntu only. Use 'make brew' on macOS." >&2
+    exit 1
+fi
+
+install() {
+    echo
+    echo "==============================================="
+    echo "Installing basic software from apt"
+    echo "==============================================="
+    echo
+
+    sudo apt update
+    sudo apt upgrade -y --autoremove
     sudo apt install -y \
         alien \
         apt-transport-https \
@@ -48,3 +62,17 @@ sudo apt update && \
         # xclip
         # sqlitebrowser
         # etckeeper
+
+    echo
+    echo "Finish!"
+    echo
+}
+
+upgrade() {
+    install
+}
+
+case "$1" in
+    u|upgrade|update) upgrade ;;
+    *) install ;;
+esac