SYSTEMD-CRONTAB-GENERA... BSD System Manager’s ManualSYSTEMD-CRONTAB-GENERA...
NAME
systemd-crontab-generator — translate cron schedules in systemd Units
SYNOPSIS
/usr/lib/systemd/system-generators/systemd-crontab-generator output-dir
DESCRIPTION
systemd-crontab-generator is a systemd.generator(7) translating classic cron FILES into native systemd.timer(5)/systemd.service(5) pairs.
It runs automatically
•
during early boot,
•
a second time by cron-after-var.service if /var is a separate mount-point, in order to process user crontabs in /var/spool/cron/crontabs,
•
after each update to /etc/crontab† and /etc/anacrontab†, and
•
when packages add files under /etc/cron.d†
(†: monitored by cron-update.path).
FILES
/etc/crontab
Administrator’s system crontab, see crontab(5).
/etc/cron.d
System crontabs managed by packages live here.
/etc/anacrontab
/var/spool/cron/crontabs
Users’ crontabs live here.
/run/systemd/generator
Automatically generated units go here.
/run/crond.reboot
If this file exists, @reboot jobs aren’t re-generated. Managed automatically.
/var/lib/systemd/timers
systemd.timer(5)s with the Persistent flag set store their timestamps here.
DIAGNOSTICS
systemctl list-timers shows an overview of current timers and when they’ll elapse.
If you see something to the effect of
/usr/lib/systemd/system-generators/systemd-crontab-generator failed with error code 1.
in the journal, you can run /usr/lib/systemd/system-generators/systemd-crontab-generator /tmp/test for more verbose output.
SEE ALSO
crontab(5), systemd.unit(5), systemd.timer(5), systemd.cron(7)
systemd-cron 2.3.4-1 April 2, 2024 systemd-cron 2.3.4-1