The cron service (daemon) runs in the background and constantly checks the directory.
You need to use the crontab command to edit/create, install, deinstall or list the cron jobs in Vixie Cron.
So, you’ll either want to open the terminal application if you’re in the Raspberry Pi desktop, or SSH into your Raspberry Pi.
Run raspi-config to configure some system options: You’ll also want to check and make sure that disable_overscan=1 and no other overscan configs are uncommented in this file. If you installed the latest version of the Raspbian OS above, then skip ahead.
So in this example, the monitor would turn off at pm and back on again at am. Keep in mind: this does not turn the Raspberry Pi off!
There are different types of configuration files: Note: This faq features cron implementations written by Paul Vixie and included in many Linux distributions and Unix like systems such as in the popular 4th BSD edition.
The syntax is compatible with various implementations of crond.
If it doesn't load automatically, I start it manually like descripted below.
The following part comes from Matt Wilcox' guide I use later on. We won't be using the desktop (we're going to run headless), and disabling the boot to desktop option will free up some system resources so the Pi performs better.
Search for updating crontab:
I recommend downloading NOOBS, which is a simplified Raspbian OS installer: https:// Once downloaded, follow the setup guide to get the OS onto your SD card, and the Raspberry Pi up and running: https:// After following the NOOBS setup instructions, you should now have your Raspberry Pi running but we’ll need to update a few settings to optimize it to run DAKboard.