anacron
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- Snippet from Wikipedia: Anacron
anacron is a computer program that performs periodic command scheduling, which is traditionally done by cron, but without assuming that the system is running continuously. Thus, it can 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. anacron was originally conceived and implemented by Christian Schwarz in Perl, for the Unix operating system. It was later rewritten in C by Itai Tzur; maintainers have included Sean 'Shaleh' Perry and Pascal Hakim. It is a dependency of cronie which is maintained by Red Hat, and Red Hat updates to cronie have included updates to anacron as well.
“The anacron service is designed to run cron jobs that could not run while a server was powered down; this is now integrated into periodic job management through the /etc/anacrontab file.”