Description of cgi_harness :
cgi_harness is a CGI testing harness that helps you to examine the exact output and environment of your CGI programs. This script changes the $SCRIPT variable to the path of the CGI script being tested (in filespace, not webspace). Then it calls this script exactly as you would the CGI being tested. The data from the server is passed to the harness, which passes it through to the real script. The real script's STDOUT and STDERR are redirected to the harness, which displays it to the viewer.