auto-maintainance.debian

#! /bin/bash

if [[ $1 = "gui" ]]; then
    MENU=$(
        zenity --list \
        --title="Automatic Maintainance (Updates / Cleaning)" \
        --text="This program is a quick and easy way to automatically update your system." \
        --column="Option" --column="Description" \
        --width="570" \
        --height="220" \
        "Run" "Runs the updates and cleanup once" \
        "Enable" "Enables Auto-Maintainance to keep your system up to date automatically" \
        "Disable" "Disables Auto-Maintainance for manual updates" \
        "Exit" "Goodbye!"
    )

    if [[ "$MENU" = "Run" ]] ;then
        xterm -e $0
    elif [[ "$MENU" = "Enable" ]] ;then
        xterm -e $0 enable
    elif [[ "$MENU" = "Disable" ]] ;then
        xterm -e $0 disable
    fi
    exit 0
fi

# Ensure we're running as root
if [[ "$(id -u)" != 0 ]]; then
    sudo $0 $@
    exit 1
fi

if [[ $1 = "enable" ]]; then
if [[ ! -f /usr/bin/auto-maintainance ]]; then
    echo auto-maintainance is not installed in the system, copying self to /usr/bin
    cp $0 /usr/bin/auto-maintainance
fi
echo '[Unit]
Description=Automatic Maintainance

[Service]
User=root
Restart=always
RestartSec=1800s
ExecStart=/usr/bin/auto-maintainance

[Install]
WantedBy=multi-user.target' > /etc/systemd/system/auto-maintainance.service
systemctl enable auto-maintainance
echo Automatic Auto Maintainance will be enabled upon reboot.
echo Use systemctl start auto-maintainance to start the service immediately.
read -p "Press a key to continue"
exit 0
fi

if [[ $1 = "disable" ]]; then
systemctl stop auto-maintainance
systemctl disable auto-maintainance
rm /etc/systemd/system/auto-maintainance.service
echo Automatic Auto Maintainance is now disabled.
read -p "Press a key to continue"
exit 0
fi

# Ensure we are not running in a Live Environment (That could make us run out of RAM on old ISO's).
if grep -q "Live session" /etc/passwd; then
	echo Auto Maintainance should not be performed on a Live Environment.
	echo If you wish to manually install or update programs use Apt .
	exit 1
fi

# NOTE: This script will ALWAYS keep the currently running kernel
# NOTE: Default is to keep 2 more, user overrides with --keep N
KEEP=2
# NOTE: Any unrecognized option will be passed straight through to apt
APT_OPTS=
while [ ! -z "$1" ]; do
	case "$1" in
		--keep)
			# User specified the number of kernels to keep
			KEEP="$2"
			shift 2
		;;
		*)
			APT_OPTS="$APT_OPTS $1"
			shift 1
		;;
	esac
done

# Build our list of kernel packages to purge
CANDIDATES=$(ls -tr /boot/vmlinuz-* | head -n -${KEEP} | grep -v "$(uname -r)$" | cut -d- -f2- | awk '{print "linux-image-" $0 " linux-headers-" $0}' )
for c in $CANDIDATES; do
	dpkg-query -s "$c" >/dev/null 2>&1 && PURGE="$PURGE $c"
done

#Ensure we have the latest list of packages
apt update

#Fix broken dependencies and installations
dpkg --configure -a
DEBIAN_FRONTEND=noninteractive \
  apt-get \
  -o Dpkg::Options::=--force-confold \
  -o Dpkg::Options::=--force-confdef \
  -y --allow-downgrades --allow-remove-essential --allow-change-held-packages \
  install -f

if [ ! -z "$PURGE" ]; then
	apt $APT_OPTS remove -yq --purge $PURGE
fi

#Remove unrequired packages
apt autoremove --purge -yq

#Update the system using APT
DEBIAN_FRONTEND=noninteractive \
  apt-get \
  -o Dpkg::Options::=--force-confold \
  -o Dpkg::Options::=--force-confdef \
  -y --allow-downgrades --allow-remove-essential --allow-change-held-packages \
  dist-upgrade

#Update flatpak's and remove unused dependencies
flatpak update -y
flatpak uninstall --unused -y

#Update and remove unused Snap's
snap refresh
snap list --all | while read snapname ver rev trk pub notes; do if [[ $notes = *disabled* ]]; then snap remove "$snapname" --revision="$rev"; fi; done