Execute commands once at a later time. Results will be sent to the users mail. More information: https://manned.org/at.
<Ctrl d> when done):at now + 5 minutes
at {{hh:mm}}
stdin at 10:00 AM today:echo "{{command}}" | at 1000
at -f {{path/to/file}} 9:30 PM Tue
atq):at -l
at -c {{job_number}}