CGI and Perl

CGI is a standard where web servers have another program generate a document.
Common Gateway Interface
CGI programs may be written in any language: sh, C, awk, C++, Java, ...
Perl happens to be used for most CGI programming because it's good at manipulating text and other programs, both useful in gateway programming.
You don't have "a CGI" any more than you have "a Perl". There's "the CGI standard", and there's "a CGI program". Confuse the two at your own risk.

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