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Test if a Module is installed and can be found...

   perl -Mmodule -e 'print "Ok\n"'

or its version
   perl -Mmodule -le 'print $module::VERSION'

Standard Module Installation

    perl Makefile.PL
    make
    make test
    make install

Private Module Installation (in your home directory)
  Replace the first line above with...

    perl Makefile.PL LIB=~/lib/perl5

  The Makefile will then install into    ~/lib/perl5
  and architecture-dependent files into  ~/lib/perl5/$archname/auto

  To use this personal perl library set your t/csh environment,
  by adding to your ".login" file...

    setenv PERL5LIB "$HOME/lib/perl5"

  And if you install architecture-dependent modules (compiled parts)
  append to the above the following extension...

    eval set `perl '-V:archname'`
    setenv PERL5LIB "$PERL5LIB:$PERL5LIB/$archname"
    unset archname

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interactive
    perl -MCPAN -e shell

    r            recomendations on what packages to re-install
    b            list all the major software bundles
    readme pkg   print the readme for the package
    instal pkg   install the package


Force upgrade of a module

    perl -MCPAN -e 'force install MIME::Base64'

Personal install
    env LIB=$PERL5LIB  perl -MCPAN -e 'install WWW::Curl'


What upgrade recomendations does CPAN make (non-interactive)
    env PERL5LIB=  perl -MCPAN -e 'CPAN::Shell->r'

upgrade all currently instaled perl packages
    env PERL5LIB=  perl -MCPAN -e 'CPAN::Shell->install(CPAN::Shell->r)'

Basic clean up, keeping metadata for future downloads...
    rm -r ~/.cpan/build/* ~/.cpan/source/authors/id/*
    chown -R anthony.anthony ~/.cpan

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RPM Module/Install Creation from CPAN

  Add extra CPAN perl modules as RPM's
    First install the CPAN to RPM converter
      yum install cpan2rpm
    Install modules as RPM packages
      cpan2rpm --force -U WWW::Curl

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Module Creation for CPAN (General)

 * First create a raw module source directory with
     h2xs -X -n Foo::Bar
 * Move or rename the directory created appropriately for later tarring
 * Move / Create your module into the source directory
 * ... Module work ...
 * Edit the test.pl and/or other testing scripts as appropriate.
   OPTIONAL: create a "t" sub-directory and move test.pl to t/test.t
   or create other "t/*.t" test files using the same style.
   Numbering the test modules in sequence is a good idea
 * Do final tests
     make test install
 * Prepare the area for taring, creating a new MANIFEST with
     rm -f MANIFEST MANIFEST.bak
     perl Makefile.PL
     make distclean manifest distclean
 * Check MANIFEST and tar the directory for upload to CPAN

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