Problems running check_memory.pl under Groundworks/Nagios

This is the error I'm getting

Can't locate Nagios/Plugin.pm in @INC ...

Looks like the script can't find the Plugin module form Nagios for Perl so we have to install this using this command (as root):

# perl -MCPAN -e 'install Nagios::Plugin' (as root)

Update: If this command fails try to delete ~/.cpan directory and retry the command

Now you should be able to login as the nagios user and run the check_memory.pl command...

$ ./check_mem.pl

CHECK_MEM OK - 4664M free | free=4890664960b;;

BAM!!

Here is the link for the check_memory.pl script

check_memory.pl