$ perl -MCPAN -e shell

cpan shell -- CPAN exploration and modules installation (v1.8)
ReadLine support enabled

cpan>
cpan> install Scalar::Util
CPAN: Storable loaded ok
Going to read /db2/dlink/.cpan/Metadata
  Database was generated on Tue, 13 Dec 2005 01:06:49 GMT
Scalar::Util is up to date.