Re: Perl app won't compile /run from cron

Try the command perldoc -l Image::Grab to show you where the module got installed, I'm guessing that that path isn't one of the @INC directories listed at the top of your post. Setting the right PATH isn't always enough if you've got custom entries added to @INC via something like the PERL5LIB environment variable, because then that environment variable needs to be set in the environment that cron provides to the programs it runs. I'm still just guessing, but probably that isn't the case and the environment provided by cron is different from the one you have on the command line. For example, are you using local::lib? If you want to see the difference, try running this command from both the command line and from a crontab entry: perl -le 'die "$ENV{PERL5LIB} @INC\n"'

If those are different, then it depends on how you're changing @INC for the best way to solve this. If you could report back with the results of the above, we can probably help more.

Comment on Re: Perl app won't compile /run from cron Select or Download Code

Replies are listed 'Best First'.
Re^2: Perl app won't compile /run from cron by dazz (Beadle) on May 25, 2018 at 08:35 UTC
Hi I tried `perldoc -l Image::Grab` but I don't have perldoc installed. I am not using local::lib. I used the cron commmand `* * * * * /usr/bin/perl /home/user/perl_script.pl 1 2>&1 \| /usr/bin/ +logger -t test_cron` [download] to get the compiler error output from syslog. Dazz	[reply] [d/l] [select]
Re^3: Perl app won't compile /run from cron by haukex (Archbishop) on May 25, 2018 at 12:17 UTC
I am not using local::lib. Based on the pathname `~/perl5/lib/perl5` and that you say you used `cpan` to install the module, I'm pretty sure you are using local::lib. The `cpan` client, when run without `sudo`, will usually detect that it doesn't have permissions to write to the system directories and autoconfigure to use local::lib. If you check your `.profile` or `.bashrc` files, you should see variables like `PERL_LOCAL_LIB_ROOT` and `PERL5LIB` being set there, these would have been added there by local::lib, and as I said those are the variables that are probably missing from the environment that `cron` provides, hence my suggestion to try and set `PERL5LIB` explicitly. I tried `perldoc -l Image::Grab` but I don't have perldoc installed. Well, you could do `sudo apt-get install perl-doc`, but did you try dave_the_m's suggestion, which should work even without `perldoc`? I also made a few other suggestions and asked a few questions above as well as here.	[reply] [d/l] [select]
Re^3: Perl app won't compile /run from cron by hippo (Bishop) on May 25, 2018 at 09:56 UTC
I tried `perldoc -l Image::Grab` but I don't have perldoc installed. `locate Image/Grab.pm`	[reply] [d/l] [select]


go ahead... be a heretic
	PerlMonks