> (I'm using vixie's crontab) you cannot really assume the crontab is 
> syntactically ok.

There is the posix standard, but there are also extra features that
are not in the standard like the "value/step"
http://pubs.opengroup.org/onlinepubs/009696699/utilities/crontab.html ;
anyway crontab(5) would be the de-facto reference on Debian.

> I noticed **none** of my user crontabs were running due to a
> systemd-crontab-generator parsing issue.
In case of error, systemd-crontab-generator should only drop the
incriminated line.

> However in these cases I would expect to receive a notification of the
> parsing/generatation error through email, exactly like cron does.
The generators runs during the early boot  and can't send e-mail
without network support and disks still mounted read-only, only log to /dev/kmsg
http://www.freedesktop.org/wiki/Software/systemd/Generators/

systemd-cron never sends e-mail by design;
but the generator could be reworked to provided an alternative
"debug/check" entry point
to ask it to validate a single crontab file/line .

This could be called during the build of the package on a test suite;
and by crontab before updating a crontab.

Alexandre Detiste


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