I have your script working however I do not get the pop-up telling me the backup successfully created. I have zenity --info –text "Thunderbird backup successfully created." but still not working.
notify-send "Thunderbird backup successfully created." not working
If I run the script from a terminal still get on pop-up
OS debian 12.5 KDE Plasma 5.27.5 Kernel: 6.1.0-21-amd64 Shell: zsh 5.9