1. Enable
chmod +x /etc/rc.d/rc.crond
/etc/rc.d/rc.crond start
2. System cron
Use /etc/cron.daily and /etc/cron.weekly for periodic scripts.
3. Verify
grep CRON /var/log/syslog
4. Crontab
crontab -e
Quick checklist
[ ] Steps completed
[ ] Config updated
[ ] Service tested
[ ] Restart/rollback ready
[ ] Logs checked