tldr/pages/common/crontab.md

crontab

Schedule cron jobs to run on a time interval for the current user. Job definition format: "(min) (hour) (day_of_month) (month) (day_of_week) command_to_execute".

• Edit the crontab file for the current user:

crontab -e

• Edit the crontab file for a specific user:

sudo crontab -e -u {{user}}

• Replace the current crontab with the contents of the given file:

crontab {{path/to/file}}

• View a list of existing cron jobs for current user:

crontab -l

• Remove all cron jobs for the current user:

crontab -r

• Sample job which runs at 10:00 every day (* means any value):

0 10 * * * {{command_to_execute}}

• Sample job which runs every minute on the 3rd of April:

* * 3 Apr * {{command_to_execute}}

• Sample job which runs a certain script at 02:30 every Friday:

30 2 * * Fri {{/absolute/path/to/script.sh}}