Crontab

To run a script periodically you have to register the script to your CRONTAB.

On old Linux versions you can edit the crontab directly ; while on modern one you should put your script inside a specific folder.

Crontab manual edition (old)

crontab -e

Just add some new entry like:

# m h  dom mon dow   command
0 2 * * * /root/bin/daily_backup > /root/logs/backup_$(date +\%Y\%m\%d).log

Crontab manual edition (new)

Instead of editing the cron, just put your script in the right folder:

• /etc/cron.hourly
• /etc/cron.daily
• /etc/cron.weekly
• /etc/cron.monthly

All scripts must belong to root:root and have the 755 permissions.

!!! NOTE !!!

You must NOT put a '.' instead your filename! See: http://askubuntu.com/questions/502592/ubuntu-14-04-not-running-bash-scripts-in-etc-cron-daily

• /etc/daily/vehco-cron.sh <<< KO - it will NOT run
• /etc/daily/vehco-cron <<< OK