- Offizieller Beitrag
Es gibt aber keine Ausreden mehr, eine Timer Unit nicht zu benutzen.
Frechheit!
Alles anzeigensystemd timers
Systemd timers are a totally different method for time-based process scheduling. The biggest difference is that systemd timers run independently to each other, probably causing all timers to fire simultaneously unless features like ?RandomizeDelaySec is used, and the jobs run in random order. The output of a systemd timer is not e-mailed, but goes into the journal.
There is a compatibility layer called systemd-cron which comes as a systemd generator building timer units from the crontab files, but the semantics are rather different and it looks like there are no plans to change that. It will generate:sequential, serial run-parts timer units for each of /etc/cron.{daily,weekly,monthly}
individual, parallel timer units for scripts in cron.d
It is unlikely that systemd timers will ever be a drop-in replacement for the old-fashioned cron. Packages are free to migrate from cron to systemd timers, but there cannot be a "big bang" time when all cron jobs get replaced by systemd timers without dedicated action by the individual package maintainers.