I have a script to shutdown the computers in my classroom running Ubuntu 22.04. The script shuts down all the computers, but hangs and does not close. If there something else I should add to the script or change. hothost is a file with the IP addresses of the computers I wish to turn off.
#!/bin/bash while read host; do sshpass -p 123456 ssh "root@$host" shutdown -h now & done < hothost I would use sshkeys instead of passwords. I would also shutdown -h +1 to schedule shutdown for 1 minute in the future, to give my script time to exit prior to executing the shutdown. If it still hangs i would recommend logging in to a targets main terminal when this script is shutting it down and see what is hanging
I put a < /dev/null in the script and it fixed the issue
#!/bin/bash while read HOST ; do sshpass -p 123456 ssh "root@$HOST" "hostname; shutdown now " < /dev/null; done < hothost