====== Crontab ======

{{howhard>1}} If you're from Windows World, crontab is Unix's Task Scheduler, only it's better. You'll hear crontab referred to as cron and cronjob.

===== Install Crontab =====

On macOS (and this should work on any other *NIX), you can install a crontab for your local user by running the following (using the nano editor)

<konsole> env EDITOR=nano crontab -e </konsole>

On the first line, you can then enter the command you want to run and how long to run it.

<code>
* * * * *  command to execute
│ │ │ │ │
│ │ │ │ └─── day of week (0 - 6) (0 to 6 are Sunday to Saturday, or use names; 7 is Sunday, the same as 0)
│ │ │ └──────── month (1 - 12)
│ │ └───────────── day of month (1 - 31)
│ └────────────────── hour (0 - 23)
└─────────────────────── min (0 - 59)

</code>

Press CTRL+O and CTRL+X to save and exit.

===== Remove Crontab =====
If you need to remove a single entry, you can edit your crontab with ''env EDITOR=nano crontab -e'' which is standard editing mode.

If you want to eliminate the crontab entirely, run the following:

<konsole>
crontab -r
</konsole>