Software updating script for Ubuntu/Debian (apt-based systems)

sup.sh

#!/bin/bash
# A script for updating apt-based Linux distros
# ... put it in ~/.local/bin, /usr/local/bin, or anywhere in your $PATH

# exit on error
set -e

# Function Definitions
function exec_red {
	printf "\\n\e[1;31m%s\e[0m\\n" "$*"
	$*
}
function print_red {
	printf "\\n\e[1;31m%s\e[0m\\n" "$*"
}
function print_yel {
	printf "\n\e[1;33m%s\e[0m\n" "$*"
}
export -f exec_red
export -f print_red

function run_update_ubu {
	printf "\\n\e[1;31m%s\e[0m\\n" "apt update"
	apt update

	printf "\\n\e[1;31m%s\e[0m\\n" "apt dist-upgrade"
	apt dist-upgrade

	printf "\\n\e[1;31m%s\e[0m\\n" "apt autoremove"
	apt autoremove

	printf "\\n\e[1;31m%s\e[0m\\n" "dpkg -l | grep "^rc" | awk '{print \$2}' | xargs -r dpkg --purge"
	dpkg -l | grep "^rc" | awk '{print $2}' | xargs -r dpkg --purge

	printf "\\n\e[1;31m%s\e[0m\\n" "exit"
}

function run_update_arch {
	printf "\\n\e[1;31m%s\e[0m\\n" "pacman -Syu"
	pacman -Syu

	if [ -n "$(pacman -Qdtq)" ]; then
		printf "\\n\e[1;31m%s\e[0m\\n" 'pacman -Rns $(pacman -Qdtq)'
		pacman -Rns $(pacman -Qdtq)
	else
		printf "\\n\e[1;31m%s\e[0m\\n" 'No cleanup needed.'
	fi

	printf "\\n\e[1;31m%s\e[0m\\n" "exit  # from sudo loop"
}

function non_root_updates {

	# Other package managers
	if [ -n "$(which flatpak)" ]; then
		printf "\\n\e[1;31m%s\e[0m\\n" "flatpak update"
		flatpak update
	fi

	# Other package managers
	if [ -n "$(which yay)" ]; then
		printf "\\n\e[1;31m%s\e[0m\\n" "yay -Syu"
		yay -Syu
	fi

}
# ~~~ END FUNCTION DEFITIONS BLOCK ~~~
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# Detect OS
_OS_ID="$(grep ^ID= /etc/os-release | awk -F= '{print $2}')"
echo "Detected distro: $_OS_ID"

_call_func=""
# Execute root tools as sudo
if [ "$_OS_ID" = "arch" ]; then
	echo "Proceeding with pacman updates..."
	_call_func=run_update_arch
elif [ "$_OS_ID" = "ubuntu" ]; then
	echo "Proceeding with apt updates..."
	_call_func=run_update_ubu
fi

if [ "$_call_func" ]; then
	print_red sudo su
	FUNC=$(declare -f $_call_func)
	sudo bash -c "$FUNC; $_call_func"
else
	print_red WARNING: Skipping apt/pacman, unknown OS: ID=${_OS_ID}
fi

# Run other software managers: flakpak, yay, etc
if [ "$NON_ROOT_UPDATES" ]; then
	non_root_updates
else
	print_yel "Skipping non root package managers (to run them, export NON_ROOT_UPDATES=1)."
fi