execdirective executes a given shell command or CGI script. It must be activated to be used. Valid tags are:
cmdwill execute the given string using /bin/sh. All of the variables defined below are defined, and can be used in the command.
cgiwill execute the given virtual path to a CGI script and include its output. The server does not perform error checking to make sure your script didn't output horrible things like a GIF, so be careful. It will, however, interpret any URL Location: header and translate it into an HTML anchor.