ArchUpdateChecker

#!/bin/bash

# "Arch Update Checker v1.0" | https://SalvatoreNoschese.it
# Require: Arch + pacman-contrib + libnotify

# Config:
auc_time="1"            # Check every (hours)
auc_delay="10"          # Start delay (seconds)
auc_notify_time="10"    # Notification time (seconds)
auc_title="Arch Update Checker 🔄"

# Set notification title based on system language
if [[ "${LANG}" == *"it"* ]]; then
    auc_found="Aggiornamenti trovati"
    auc_notfound="Nessun aggiornamento:"
    auc_runcmd="Esegui il comando"
    auc_recheck="Ricontrollo tra"
else
    auc_found="Updates found"
    auc_notfound="No updates:"
    auc_runcmd="Run the command"
    auc_recheck="Check again in"
fi

# Check if /etc/arch-release, pacman-contrib, or libnotify are missing
if [[ ! -f /etc/arch-release ]] || ! pacman -Qs pacman-contrib &> /dev/null || ! pacman -Qs libnotify &> /dev/null; then
    echo "$(date +"%Y-%m-%d %H:%M:%S"): Not Arch Linux or missing dependencies!" >> "$HOME/$(basename "$0").log"
    exit 1
fi

# Check if another instance of the script is already running
lockfile="/tmp/$(basename "$0").lock"
if [ -f "$lockfile" ] && ps -p $(cat "$lockfile") > /dev/null; then
    notify-send -a "$auc_title" -t "$((auc_notify_time * 1000))" -i "archlinux-logo.svg" "Exiting:" "The script is already running."
    exit 1
else
    echo $$ > "$lockfile"
fi

# Run While
sleep "$auc_delay"
while true; do
    # If yay or paru is installed
    if pacman -Qs yay &> /dev/null; then
        aur_updates=$(yay --aur -Qu | wc -l)
        auc_infoaur="$auc_runcmd 'yay --aur -Syu'"
    elif pacman -Qs paru &> /dev/null; then
        aur_updates=$(paru --aur -Qu | wc -l)
        auc_infoaur="$auc_runcmd 'paru --aur -Syu'"
    fi

    # Make notify
    auc_summary="$auc_found 🔔"
    auc_pacupdates=$(checkupdates | wc -l)
    if [[ $auc_pacupdates -gt 0 && $aur_updates -gt 0 ]]; then
        auc_body="<b><i>(Pacman: $auc_pacupdates + AUR: $aur_updates)</i></b>\n$auc_runcmd 'sudo pacman -Syu'\n+++\n$auc_infoaur"
    elif [[ $auc_pacupdates -gt 0 ]]; then
        auc_body="<b><i>(Pacman: $auc_pacupdates)</i></b>\n$auc_runcmd 'sudo pacman -Syu'"
    elif [[ $aur_updates -gt 0 ]]; then
        auc_body="<b><i>(AUR: $aur_updates)</i></b>\n$auc_infoaur"
    else
        auc_summary="$auc_notfound"
        auc_body="$auc_recheck $auc_time hr ⏰"
    fi

    # Kill notify, then send again
    dbus-send --print-reply --dest=org.freedesktop.Notifications /org/freedesktop/Notifications org.freedesktop.Notifications.CloseNotification uint32:982313
    sleep "1s" # attebd just one second before send new notification
    notify-send -a "$auc_title" -t "$((auc_notify_time * 1000))" -i "archlinux-logo.svg" -h "string:desktop-entry:org.kde.konsole" -r 982313 "$auc_summary" "$auc_body"
    sleep "${auc_time}h"  # Set by $auc_time
done

ArchUpdateChecker.desktop

[Desktop Entry]
Exec=/home/nomeutente/.config/ArchUpdateChecker
Icon=archlinux-logo.svg
Name=Arch Update Checker
Terminal=False
Type=Application

More info here: https://salvatorenoschese.it/archupdatecheck-sh-script-download/