[NTLUG:Discuss] mod_perl question

[kbrannen@gte.net]

MadHat wrote:
> On Sun, 2003-06-01 at 19:32, Rev. wRy wrote:
> 
>>On Sun, 2003-06-01 at 19:04, Rick Matthews wrote:
...
> Also, if you want to know if something is installed with perl, or want
> to know the version, it usually works to do:
> $ perl -MLWP -e 'print "$LWP::VERSION\n"'
> 5.65
> $ perl -MCPAN -e 'print "$CPAN::VERSION\n"'
> 1.70
...

Yep, that is so useful I created a script for that sometime ago.  It looks 
like (called mod_ver for module version):

#!/bin/ksh
mod=$1
perl -M$mod -e print\"\$$mod::VERSION\\n\"

so "mod_ver HTML::TreeBuilder" gives "3.11"; while "mod_ver XYZZY" gives 
"Can't locate XYZZY.pm ..."  So not only do you know if it's installed, but 
what version it is if it's there.

Kevin