Here is a small program that "requires" a list of modules and prints their versions. It only works for modules that have $VERSION defined: 
    #!/usr/bin/perl -w

    use strict;

    my @modules = qw(
                      File::Copy
                      File::Find
                      File::Foo
                      File::Spec
                      File::Temp
                    );


    for my $module (@modules) {

        my $version;
        eval "require $module";

        if (not $@) {
            $version = $module->VERSION;
            $version = '(unknown)' if not defined $version;
        }
        else {
            $version = '(not installed)';
        }

        print $module, "\t", $version, "\n";
    }

    __END__
    Prints:

    File::Copy  2.03
    File::Find  (unknown)
    File::Foo   (not installed)
    File::Spec  0.82
    File::Temp  0.12

[download]

In your example you should check the $@ variable, see perlvar, after using eval to see if there was as error: 

    print "Eval error: ", $@ if $@;

[download]

--
John.

In reply to Re: $VERSION to logfile? by jmcnamara
in thread $VERSION to logfile? by tenya

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.