Linux timed Task-cron

/sbin/service Crond Start//Startup service
/sbin/service Crond stop//Shut down service
/sbin/service crond Restart//Restart service
/sbin/service Crond Reload//Reload Configuration

Root to view your cron settings: Crontab-u root-l
Root wants to delete Fred's cron settings: Crontab-u fred-r

View the current user's cron:crontab-l
Edit the current user's cron:crontab-e
Edit the root user's cron:crontab-u root-e

View cron Execution log: tail-f/var/log/cron

System cron Configuration More/etc/crontab

0 * * */home/tools/backup/backall.sh

Linux timed Task-cron