linux-wyee:/home/martin # cd perl
linux-wyee:/home/martin/perl # perl module_test.pl
WWW::Mechanize::Firefox is not installed at module_test.pl line 10.
Use of uninitialized value in print at module_test.pl line 16.
WWW::Mechanize::Firefox version is: 
Use of uninitialized value in print at module_test.pl line 18.
WWW::Mechanize::Firefox is installed as file: 
WWW::Mechanize::Firefox also requires that 
    these modules be installed: 
Use of uninitialized value in join or string at module_test.pl line 22.

linux-wyee:/home/martin/perl #