administrator@varunraj ~/scripts
$ perl -MCPAN -e -shell
Ambiguous use of -shell resolved as -&shell() at -e line 1.

cpan shell -- CPAN exploration and modules installation (v1.9402)
Enter 'h' for help.

cpan[1]> install XML::Simple
CPAN: Storable loaded ok (v2.20)
Going to read '/home/administrator/.cpan/Metadata'
  Database was generated on Tue, 16 Feb 2010 07:53:49 GMT
XML::Simple is up to date (2.18).

cpan[2]> install XML::SAX
XML::SAX is up to date (0.96).