[mrtg] Re: Perl external command ?!!

Roth, Gabrielle gabrielle.roth at xo.com
Tue Dec 3 16:51:31 MET 2002

>In fact, the pbem comes from the crontab.
>When I execute from the command line exactly what it is in crontab :
>/usr/local/mrtg/bin/mrtg /usr/local/mrtg/bin/rssi_error.cfg --logging
>It works : MRTG started without errors, warnings ..
>When I use crontab, I 've got these errors :
>WARNING: Could not get any data from external command '/usr/bin/perl
>pl bmpcmali'
>Maybe the external command did not even start. (Illegal seek)
>Argh !! Help very appreciated !!

I would be willing to bet my morning scone that the problem is not cron.
Cron runs under a different, and often more restrictive, environment than
your shell.  Cron might not know where that script is;  you need to tell it.

As Daniel said, change your target to contain absolute paths, like so:
Target[bmpcmali_error]: `/usr/bin/perl /path/to/bm_rssi_error.pl bmpcmali`
                                       ^^^^^^^^^ New stuff

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