Scheduling Occasional Tasks

at

Executes commands at a specified time.

at hh:mm mm/dd/yy
at> echo "File created using the at utility" > atfile
at> ^D

at now + 1 hour

atq

Lists the user's pending jobs. Equivalent to at -l.

atrm

Deletes jobs, identified by their job number.

batch

Executes commands when system load levels permit.