back-up-update-and-poweroff

#!/bin/bash

#Environment: An Archlinux driven PC
#
#Purpose: Let a newbie user safely shutdown his PC by:
#   1. Automatically run an incremental backup via rsync;
#   2. Automatically check if timeshift is needed;
#   3. Shutdown
#as well as:
#   4. Timing a safe shutdown via the User's crontab
#
#Args: None for full manual choice, or any combo of commands - e.g. '3',
# see "case $A in" here below
#
#Required: [Archlinux]: timeshift, dialog, pacman, yay, cronie
#Scripts:
#   'pbpushme'  -> send a [pushbullet](https://www.pushbullet.com/) notification to a mobile device - if needed;
#   'bupday'    -> any backup script, in my case using rsync
#
#######################################################################################
#   Auth='Piero Versace aka Piero Strada'
#   Rel='01 set 2021, 15:36:49, CET'
#   Upd='07 set 2022, 12:00:49, CET'
#   Ver='1.0.0'
#   mVer='5'
#######################################################################################
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see [[http://www.gnu.org/licenses/]].
#######################################################################################


#User's crontab -e:
#13 13 * * * eval "export DISPLAY=:0";/usr/bin/TERMINAL -e "/home/USER/.local/bin/bupdown 3"
#10 15 * * * echo '/usr/bin/TERMINAL -e "/home/USER/.local/bin/bupdown 3"' | at now + 1 minute
#E1 50 09 * * * eval "export DISPLAY=:0";/usr/bin/TERMINAL -e "/home/USER2/.local/bin/bupdown 5"
#Ek 50 22 * * * eval "export DISPLAY=:0";/usr/bin/TERMINAL -e "/home/USER2/.local/bin/bupdown 5"

USER1='user1'
USER2='user2'

Kom="$1"
Kpm='/usr/bin/pacman'
Kts='/usr/bin/timeshift'
Kpm='/usr/bin/yay'
Kpo='/usr/bin/poweroff'
Kbup='bupday'
Kpush='pbpushme'
GraceSec=''
Answer="/tmp/Ans"
touch "$Answer"
uNAME=$(echo $0|cut --delimiter='/' -f 3)
Kbu="/home/$uNAME/.local/bin/$Kbup"
Kpu='echo'
[ "$uNAME" = "$USER1" ] && Kpu="/home/$uNAME/.local/bin/$Kpush"
[ "$uNAME" = "USER2" ] && Kpu="/home/$uNAME/.local/bin/$Kpush"
tsChk(){
    if [ "$Kom" = '' ];then
        if [ "$TSunit" = '' ];then
            echo "ATTENZIONE, 'timeshift' non configurato."
            echo 'Abort'
            exit 2
        fi
        #isbt=$(df -h -t btrfs 2>/dev/null)
        isbt=$(df -Th / | grep btrfs 2>/dev/null)
        if [ "$isbt" != '' ];then
            echo "btrfs detected" >/dev/stderr
        else
            sudo timeshift --snapshot-device /dev/$TSunit
            sudo timeshift --check
        fi
    else
        sudo timeshift --check
    fi
}
if [ "$Kom" = '' ];then
    A=''
    act=''
    dialog --backtitle "BACKUP + SPEGNIMENTO" --title "Puoi spegnere il PC eseguendo prima un backup." --menu "Scegli:" 15 50 6 \
1 "Backup veloce E SPEGNI" 2 "Backup veloce + AGGIORNA, E SPEGNI" 3 "Backup COMPLETO + AGGIORNA, E SPEGNI" 4 "SPEGNI subito senza Backup" 5 "Test" 2>"$Answer"
    A=$(< "$Answer")
else
    A="$Kom"
    GraceSec='60'
    paplay $HOME/.local/share/mysounds/dialog-warning.ogg 2>/dev/null &
fi

case $A in
       1)
           act="Hai scelto $A: Backup veloce & Spegni"
           if [ "$GraceSec" != '' ];then dialog  --backtitle "BACKUP + SPEGNIMENTO" --title "Spegnimento Programmato in $GraceSec secondi:"  --pause "$act" 10 60 $GraceSec && echo ok || exit 10;fi
           tsChk
           Cho="[$(date|awk '{print $1,$2,$3,$4,$5}' | sed 's/,\([^,]*\)$/]\1/') $act"
           #[ "$GraceSec" != '' ] && $Kpu "$Cho"
           sudo $Kpo
           ;;
       2)
           act="Hai scelto $A: Backup veloce + AGGIORNA, E Spegni"
           if [ "$GraceSec" != '' ];then dialog  --backtitle "BACKUP + SPEGNIMENTO" --title "Spegnimento Programmato in $GraceSec secondi:"  --pause "$act" 10 60 $GraceSec && echo ok || exit 10;fi
           tsChk
           $Kpm -Syu --noconfirm
           Cho="[$(date|awk '{print $1,$2,$3,$4,$5}' | sed 's/,\([^,]*\)$/]\1/') $act"
           #[ "$GraceSec" != '' ] && $Kpu "$Cho"
           sudo $Kpo
           ;;
       3)
           act="Hai scelto $A: Backup COMPLETO + AGGIORNA, E Spegni"
           if [ "$GraceSec" != '' ];then dialog  --backtitle "BACKUP + SPEGNIMENTO" --title "Spegnimento Programmato in $GraceSec secondi:"  --pause "$act" 10 60 $GraceSec && echo ok || exit 10;fi
           tsChk
           sudo $Kbu
           $Kpm -Syu --noconfirm
           Cho="[$(date|awk '{print $1,$2,$3,$4,$5}' | sed 's/,\([^,]*\)$/]\1/') $act"
           #[ "$GraceSec" != '' ] && $Kpu "$Cho"
           sudo $Kpo
           ;;
       4)
           act="Hai scelto  $A: SPEGNI SUBITO"
           if [ "$GraceSec" != '' ];then dialog  --backtitle "BACKUP + SPEGNIMENTO" --title "Spegnimento Programmato in $GraceSec secondi:"  --pause "$act" 10 60 $GraceSec && echo ok || exit 10;fi
           Cho="[$(date|awk '{print $1,$2,$3,$4,$5}' | sed 's/,\([^,]*\)$/]\1/') $act"
           #[ "$GraceSec" != '' ] && $Kpu "$Cho"
           sudo $Kpo
           ;;
       5)
           act="Hai scelto  $A: Comando di test"
           if [ "$GraceSec" != '' ];then dialog  --backtitle "BACKUP + SPEGNIMENTO" --title "Spegnimento Programmato in $GraceSec secondi:"  --pause "$act" 10 60 $GraceSec && echo ok || exit 10;fi
           Cho="[$(date|awk '{print $1,$2,$3,$4,$5}' | sed 's/,\([^,]*\)$/]\1/') $act"
           #[ "$GraceSec" != '' ] && $Kpu "$Cho"
           echo 'Comando annullato'
           ;;
       *)
           echo "Comando annullato: abort"
           exit
esac
rm "$Answer"
exit