% sudo perl -MCPAN -e 'shell'
Perl lib version (v5.8.8) doesn't match executable version (v5.10.0) at /usr/lib/perl/5.8/Config.pm line 46.
Compilation failed in require at /usr/local/share/perl/5.8.8/CPAN.pm line 14.
BEGIN failed--compilation aborted at /usr/local/share/perl/5.8.8/CPAN.pm line 14.
Compilation failed in require.
BEGIN failed--compilation aborted.

% perldoc perl
Perl lib version (v5.8.8) doesn't match executable version (v5.10.0) at /usr/lib/perl/5.8/Config.pm line 46.
Compilation failed in require at /usr/share/perl/5.8/Pod/Perldoc.pm line 7.
BEGIN failed--compilation aborted at /usr/share/perl/5.8/Pod/Perldoc.pm line 7.
Compilation failed in require at /usr/local/bin/perldoc line 9.
BEGIN failed--compilation aborted at /usr/local/bin/perldoc line 9.