I have a Perl Module that i created and i want to run one of the subroutine in it on a schedule. I know I can just make a small perl script that calls the subroutine and call it from the crontab but if there is a way to call the subroutine right from the crontab that would be cool!
Is this possible?
You can use Perl's -e switch for executing code from the command line, e.g.
perl -e 'use your_module; your_function()'
Make that even shorter with the -M switch for loading a module:
perl -Myour_module -e 'your_function()'
The perlrun man page is your friend.
You can run the subroutine from the command line using something like
perl -MYour::Module=some,functions,to,import,such,as,foo -e 'foo();'
So you will be able to do the same from the crontab. Note that the cron usually runs with a restricted set of environment variables, so you may need to add a -I/path/to/your/modules option.
If you want a more elegant solution, your module can be configured to detect that it is being run as a script and behave differently in that situation. See this discussion: In Perl, how can I find out if my file is being used as a module or run as a script?
