Cron

Paste a crontab expression or assemble one below. Next run times use the timezone you pick, including DST. Vixie rules: if both day-of-month and day-of-week are set, either may match.

Expression

Builder

Minute Hour Day Month Weekday

Timezone

Create this job on Ubuntu

Open your user crontab in the terminal:

crontab -e

Add these lines, replacing /path/to/command with the command or script you want to run:

CRON_TZ=UTC
* * * * * /path/to/command

An example:

0 0 * * 0 tar -zcf /var/backups/home.tgz /home/

This command creates a weekly backup of your home directory at 00:00 on Sunday.