Compare cron and anacron in Linux with an example?
|1.||It is a daemon that runs scheduled tasks||It runs commands periodically, the frequency being defined in several days.|
|2.||Example – updates, system backups||Example – a backup script that is scheduled to run weekly or monthly.|
|3.||Suitable for machines that are on 24x7 like servers||Suitable for machines like laptops and desktops that are NOT on 24x7.|
|4.||Runs as per defined schedules.||Checks if any job has to be executed when the user turns on the power.|
|5.||Default system crontab file is /etc/crontab||Listed in /etc/anacrontab|
BY Best Interview Question ON 15 Apr 2019