$ 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 .). BEGIN failed--compilation aborted. $ perl hello_app.cgi Content-Type: text/html Hello World! $