Hi all, I want to automatically start a data backup script (to USB or network drive) at each shutdown of my computer. I did some research into this and found that several people have the same problem as I do. But the threads I found petered out into discussions of several ways of doing this, working for some people and not for others. So here I am wondering if there is a canonical, proper and reliable method of doing this.
The script needs to run when a shutdown (but not a reboot) is started while networking and USB mounts are still up, and (preferably) multi-user mode has turned off. Perusing the systemd documentation I found all kinds of good examples of how to start stuff in a well-ordered manner to get the system up, but for shutting down there is quite little information. How is it done? robert
