This is my current click on and away it goes "backup.sh" :
sakura -e rsync -avu --delete /mnt/ventoy2 /mnt/sdc1/LinuxBackups
sakura -e sync
(I know. To be more generic, that should be "/mnt/wkg" but the script works as-is and I can fix it later).
First though, I have to click the "Save" icon on the screen to make sure that all the data is current. That's too much work.
Being laz... I mean "frugal", I'd like to have the script do the save operation for me to make sure it is done before the backup starts.