Server-side includes are a simple way of generating documents that are the same apart from a small dynamic part (such as a page access counter). The HTTP server needs to be configured to accept them.
A tutorial is at
Most commonly used is the
The command in "..." will be given to
<!--#exec cmd="..." -->
/bin/shto execute. e.g.
will include today's date in the document.
<!--#exec cmd="/bin/date" -->