at schedules a one-time job at a specific time: echo 'command' | at 3:00 AM. atq lists pending jobs and atrm removes them. Useful for off-hours maintenance, scheduled reports, or any task that runs exactly once.
One-time Jobs with at
sudo apt install at
# Run at specific time
echo "/backup.sh" | at 02:00
echo "/deploy.sh" | at "noon tomorrow"
echo "/report.sh" | at "9am next Monday"
# List jobs
atq
# Remove job
atrm 3