Linux task scheduling and backup | Schedule Tasks using crontab | linux backup with tar & cron jobs
A cron job can be used to send emails, to backup data, to update with the latest security patches, etc. | CRON is a task scheduler (a daemon) which runs commands at predetermined times and intervals. You can choose the exact time at which the command will run by setting the minute, the hour, the day and the month (It is also called linux task manager). You can also define the periodicity, e.g. a command can be configured to run cron every 30 minutes, to run cron every 15 minutes, to run cron every hour, to run cron every 2 hours, or at a particular time