title: cronjob entry in crontab -e vs /etc/crontab . Which one is better?
body: <p>What is the difference when I put crontab entry in crontab -e (the default location is : /var/spool/cron/username ) and in /etc/crontab? I mean crond daemon will essentially execute both cron jobs. Then why there are two different ways to schedule cronjob ? Which  one preferred over the other ? </p>