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If you don't have permission to install a Perl module into the system Perl directories, you will not be able to use CPAN or yum or atp-get etc to install the module. You have to manually install it. Here are the steps:

1. Download the module's package from search.cpan.org
2. Install the package:
   

   $ tar zxf module-name.tgz
   $ cd module-name
   $ perl Makefile.PL PREFIX=/your-custom-dir
   $ make
   $ make test
   $ make install

3. Set the environment variable to extending the library path -
   open your $HOME/.bashrc, and add the following line:
   

   PERL5LIB=/home/path/lib:/usr/another/path/lib; export PERL5LIB

4. Test your installation and environment setup:
   

   $ PERL5LIB=/home/path/lib:/usr/another/path/lib; export PERL5LIB
   $ perl -e 'use module-name'

   If you don't see any error message, you have successfully installed and configured the Perl module in a local custom location.