Use this skill to schedule recurring or one-time commands through the system crontab and `at`. It shows how to list, add, and remove jobs, with common schedules and practical notes about command paths and output logs.
Schedule reminders, recurring tasks, and one-time jobs using system crontab.
Run score Not tested
See how to installReview the instructions the agent will receive before you install.
Schedule tasks using the system crontab via shell_exec.
crontab -l
(crontab -l 2>/dev/null; echo "*/20 * * * * echo 'Time to take a break!' >> /tmp/opc-reminders.log") | crontab -
| Schedule | Cron expression |
|---|---|
| Every 20 minutes | */20 * * * * |
| Every hour | 0 * * * * |
| Every day at 8am | 0 8 * * * |
| Weekdays at 5pm | 0 17 * * 1-5 |
| Every Monday at 9am | 0 9 * * 1 |
Use at for one-time jobs:
echo "echo 'Meeting reminder' >> /tmp/opc-reminders.log" | at 14:30
Or schedule with a specific date:
echo "echo 'Deadline reminder' >> /tmp/opc-reminders.log" | at 10:00 2026-03-20
Edit the crontab directly:
crontab -e
Or filter out a specific job:
crontab -l | grep -v 'pattern-to-remove' | crontab -
$PATH)./dev/null to avoid mail noise.at availability: which at (install with apt install at if missing).No reviews yet. Tell others what you thought.
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