Cron and Crontab commands
The cron command starts a process that schedules command execution at specified dates and times. crontab - maintain crontab files for individual users.Similar to other commands this to have options . -u It specifies the name of the user whose crontab is to be tweaked. -l The current crontab will be displayed on standard output. -r The current crontab will be be removed. -e This option is used to edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. Usage : #crontab -u [user_name] - e An entry under crontab for user specified by the user_name will be made and saved automatically on exiting the editor. #crontab -u [user_name] - l Shows the cron jobs for the user specified. The cron jobs deceleration needs to be done in a 5 column format consisting of minute (0-59) hour (0-23) day of the month (1-31) month of the year (1-12) day of the week (0-6 with 0=Sunday) Taking the example that if the 'root' user desires to setup ...