All SSI directives have the format:

<!--#command parameter(s)="argument"-->

Each of the symbols is important; be careful not to forget the pound sign (#).

include
Inserts text of document into current file.

• Arguments
     file - Pathname relative to a document on the server.
     virtual - Virtual path to a document on the server.
  
  
• For
     <!--#include file="stuff.html"-->
     <!--#include virtual="/personal/stuff.html"--;
  

fsize
Inserts the size of a specified file.

   The size of the file is <!--#fsize file="/mybook.psd"--> bytes.

exec
Executes external programs and inserts output in the current document.

• Arguments
     cmd - Any application on the host.
  
• cgi
     CGI program.
  
     For example:
     <!--#exec cmd="/bin/finger $REMOTE_USER@$REMOTE_HOST"-->
     This page has been accessed
     <!--#exec cgi="/cgi-bin/counter.pl"-->
     times.