Fcron can also do random timings, jitter, running if the time passed occured while system was off, timing based on runtime not elapsed time, delay until system

Fcron can also do random timings, jitter, running if the time passed occured while system was off, timing based on runtime not elapsed time, delay until system is less loaded, avoid overlapping instances of the same job. http://fcron.free.fr/doc/en/fcrontab.5.html http://fcron.free.fr/doc/en/fcrontab.5.html 1.0 released 21 years ago.