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One time reboot of Linux (Ubuntu)

posted 3 Nov 2015, 08:17 by Tristan Self
If you occasionally need to reboot a Linux box as a one off one evening you can perform the following commands using the at command. Note if you set a time that has just past it will perform the reboot the following day. So lets say its 16:15 and you want to schedule a reboot at 21:00 that evening, to do this you can do run these commands.

# at 21:00
at> shutdown -r now

Hit Ctrl + D

You'll now see its been created:
job 1 at Tue Nov 3 21:00:00 2015

To check on any at commands that are scheduled you can run:
# atq
1       Tue Nov  3 21:00:00 2015 a root