The next most common SSI directive is ExecCGI. NOTE: You must have ExecCGI enabled in your apache's httpd.conf configuration file for this next method to work. (It's commonly enabled by default)
This method is most commonly used for embedding cgi/perl scripts, but is not limited to.
<!--#exec cgi="/path/to/textfile.txt" -->
An example to call/embed a text file. (works for any file type like previous examples)
