The results of your code are misleading because it tells me I only have one file named "Base.pm". 
          'Base.pm' => 1,

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However, I have 22 installed files named "Base.pm" 
Chart/Base.pm
DBD/Gofer/Policy/Base.pm
DBD/Gofer/Transport/Base.pm
DBI/Gofer/Serializer/Base.pm
DBI/Gofer/Transport/Base.pm
Date/Manip/Base.pm
DateTime/Locale/Base.pm
Exception/Class/Base.pm
ExtUtils/CBuilder/Base.pm
ExtUtils/Constant/Base.pm
IO/Compress/Base.pm
IO/Uncompress/Base.pm
Log/Dispatch/Base.pm
Module/Build/Base.pm
Net/DNS/Resolver/Base.pm
TAP/Base.pm
TAP/Formatter/Base.pm
URI/file/Base.pm
XML/SAX/Base.pm
YAML/Base.pm
YAML/Dumper/Base.pm
YAML/Loader/Base.pm

[download]
See Find installed Perl modules matching a regular expression

In reply to Re^2: script to check modules exist... by toolic
in thread script to check modules exist... by Anonymous Monk

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