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           anacrontab(5)
     /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)