at

Execute commands once at a later time. Service atd (or atrun) should be running for the actual executions.

Execute commands from standard input in 5 minutes (press Ctrl + D when done):

at now + 5 minutes

Execute a command from standard input at 10:00 AM today:

echo "{{./make_db_backup.sh}}" | at 1000

Execute commands from a given file next Tuesday:

at -f {{path/to/file}} 9:30 PM Tue