Warning regarding SailfishOS upgrades:
to prevent any misbehavior of the cron daemon, please stop the daemon before starting any OS upgrade
Cron is a standard UNIX daemon that runs specified programs at scheduled times.
Paul Vixie's cron adds better security and more powerful configuration
options to the standard version of cron.
Vixie Cron has been adapted for Sailfish OS by Zeamoceq to prevent timer sleep issues.
Sources can e.g be found on github.
I uploaded this package in my repo as it is a dependency of Sailcron.
Please consider NOT using vixie-cron, but a maintained cron program: cronie
User will now keep its secondary groups when running from cron, so for example some network permission problems on Xperia X should be solved (thanks @juiceme)