cron

• Service to run scripts automatically at scheduled times
• Tools used for this functionality:
  • at
  • crontab
  • anacron
  • logrotate
• Script locations:
  • /etc/crontab
  • /etc/cron.d
  • /etc/cron.hourly
  • /etc/cron.daily
  • /etc/cron.weekly
  • /etc/cron.monthly

Job definition

Startup scripts

• /etc/init/
• /etc/init.d/
• Runlevel scripts

To create a cron job

• First create a script to be executed automatically. Then setup crontab
  • On executing crontab -e it will prompt you to select a editor

• After selecting the editor it opens a file in the editor you chose.
  • Add your cron job at the end of the file