Using at to schedule tasks

It is useful if you want to run a task once only. Using at is not really not so complicated.

Check daemon status:

systemctl status atd

Setup a basic job:
$ at 12:12
> poweroff
> logger hello
> <Ctrl>+<D>

Show the queue - what is currently waiting to be executed:
$ atq

1 - the job to be removed:
$ atrm 1

Intuitive language:
$ at now +5min