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I have a Minecraft server running on OS Ubuntu Server 20.04.3 with systemd.

I need to create a user called shutdown which, on login (even from ssh) should:

  • Run script shutdownAll
  • Log out from session

The shutdownAll script should be the following (or equivalent):

systemctl stop minecraft
shutdown +5 "SERVER SHUTDOWN IN 5 MINUTES"

Any ideas to do it?
EDIT: I've thought about using a command as shell, but how do I execute two commands?

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  • Did you try putting those commands in the shutdown user's shell's start-up file (like, in ~/.bashrc)? Commented Nov 4, 2021 at 21:24
  • Does the user have the ability to run systemctl with sudoer rights so that it can actually stop the service? Commented Nov 5, 2021 at 0:43
  • @they @Nasir Riley Didn't try using ~/.bashrc, but I had made a script to be run manually. It was in the sudoer file, but didn't recognize systemctl. Used a Cmd_Alias with permission for just /sbin/shutdown and /bin/systemctl Commented Nov 5, 2021 at 6:52

1 Answer 1

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I've managed to solve this.
I've created a new script (/usr/local/bin/management/shutdownAll), containing

sudo systemctl stop minecraft
sudo shutdown +5 "SERVER SHUTDOWN IN 5 MINUTES"

And made it executable with chmod +x shutdownAll.
Then edited visudoer file adding

shutdown ALL = ALL

And called usermod -s /usr/blocal/bin/management/shutdownAll.
On login, the password is asked twice (but it's ok), once for login and once for sudo, then the server is stopped, poweroff scheduled 5 minutes later and session is closed.

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