If there is a time-intensive task you want to run, but you do not want to do it while you are still logged in, you can tell Ubuntu to run it later with the
at command which you must install. The package name is the same as the tool:
at. To use
at, you need to tell it the time at which you want to run and then press Enter. You will then see a new prompt that starts with
at>, and everything you type there until you press Ctrl+D will be the commands you want
at to run.
When the designated time arrives,
at performs each action individually and in order, which means later commands can rely on the results of earlier commands. In this next example, run at just after 8:00 p.m.,
at is used to download and ...