or download this
$ perl -MCGI::Ex -e ''
Can't locate CGI/Ex.pm in @INC (@INC contains: /usr/local/lib64/perl5
+/usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/
+vendor_perl /usr/lib64/perl5 /usr/share/perl5 .).
...
Hello World!
$