lk/basics/at.md

Then jobs can be specified with absolute time, such as:

at 16:20

at noon

at midnight

at teatime

The jobs can also be specified relative to the current time:

at now +15 minutes

Finally, accept the jobs with ^D.

Managing at Jobs

Display a list of commands to run with:

atq

2 Sat Oct 20 16:00:00 2018 a roach-1

This will print all pending IDs. Remove a job by the ID with:

atrm 2

Check /var/spool/atd/