Cron is a time-based job scheduler in Unix-like systems. It lets you run commands/scripts automatically at scheduled times.
crontab -l — List your cron jobscrontab -e — Edit your cron jobscrontab -r — Remove your cron jobs* * * * * command — Cron schedule syntaxMIN HOUR DAY MONTH WEEKDAY command
* — Any value0-59 — Minutes0-23 — Hours1-31 — Day of month1-12 — Month0-7 — Day of week (0 or 7 = Sunday)