NAME

       /etc/anacrontab - monotonic jobs

DESCRIPTION

       The file /etc/anacrontab follow the rules previously set by anacron(8).

       Lines starting with '#' are comments.

       Environment variables can be set using VAR=VALUE keypairs.

       The special RANDOM_DELAY (in minutes) environment variable is translated to AccuracySec=.

       The  special  START_HOURS_RANGE  (in hours) environment variable is translated to the ´hour´ component of
       OnCalendar=.  anacron expect a range in the format ##-##, systemd-crontab-generator only use the starting
       hour of the range as reference.

       The other lines are job-descriptions that follow this layout:

       period delay job-identifier command

       *      period  is a number of days to wait between each job execution, or special values @daily, @weekly,
              @monthly, @yearly

       *      delay is a number of extra minutes to wait before starting job. It is translated in OnBootSec=

       *      job-identifier is a single word. systemd-crontab-generator uses it to construct the  dynamic  unit
              names: cron-<job-identifier>-root-0.timer and matching cron-<job-identifier>-root-0.service

       *      command is the command that is run by a shell

BUGS

       systemd-crontab-generator doesn't support multiline commands.

       Any period greater than 30 is rounded to the closest month

       There  are  subtle  differences  on  how  anacron & systemd handle persistente timers: anacron will run a
       weekly job at most once a week, with allways a minimum delay of 6 days between runs; where  systemd  will
       try  to  run  it every monday at 00:00; or as soon the system boot. In the most extreme case, if a system
       was only started on sunday; a weekly job will run this day and the again the next (mon)day.
       With carefull manual settings, it would be possible to run the real anacron  binary  (not  your  distro's
       package) with systemd-cron; if you need an identical behaviour.
       There is no difference for the daily job.

DIAGNOSTICS

       After  editing  /etc/anacrontab, you can run journalctl -n and systemctl list-timers to see if the timers
       have well been updated.

SEE ALSO

       systemd-crontab-generator(8), systemd.timer(5)

AUTHOR

       Alexandre Detiste <alexandre.detiste@gmail.com>