Install anacron by entering the following commands in the terminal:
sudo apt update sudo apt install anacron
Description:
cron-like program that doesn't go by time
Anacron (like "anac(h)ronistic") is a periodic command scheduler. It executes commands at intervals specified in days. Unlike cron, it does not assume that the system is running continuously. It can therefore be used to control the execution of daily, weekly, and monthly jobs (or anything with a period of n days), on systems that don't run 24 hours a day. When installed and configured properly, Anacron will make sure that the commands are run at the specified intervals as closely as machine uptime permits. . This package is pre-configured to execute the daily jobs of the Debian system. You should install this program if your system isn't powered on 24 hours a day to make sure the maintenance jobs of other Debian packages are executed each day.
Homepage: http://sourceforge.net/projects/anacron/
Version: 2.3-24
Section: admin