Cron job

Cron is used to schedule jobs on a regular basis. It has the following files and directory: /etc/crontab - system crontab file. Root user use it to create automatic task. /etc/cron.d - crontab extension directory,  contain cron files. /etc/cron.daily: - this directory contain scripts, all scripts in the directory run once a day. /etc/cron.hourly: - …