perldoc CPAN has a FAQ section. Item 1 answers your question.

Update: ++Chmrr has pointed out that this is FAQ #5 in the Perl 5.6.1 distribution version. YMMV depending on your local version of perl and CPAN.pm. ExtUtils::MakeMaker has a more complete list of the installation directories you can set. Use your local perldoc to get the most accurate info on your installed modules.

After Compline,
Zaxo

In reply to Re: Using CPAN to install modules in $HOME? by Zaxo
in thread Using CPAN to install modules in $HOME? by cshirky

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