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A file extension that is also sometimes known as SSI, SHTML is a
HTML file that includes server instructions or server side
includes, and is similar to an ASP
file. This file is commonly used as a method of identifying
files that include server instructions and what ones do not, to
help load each page as fast as possible. A server administrator may
set the name of the file extensions to anything;
however, the files are commonly either .SHTML or .SSI. In addition,
an administrator may enable for all files to include executable
code; however, enabling this will often cause the server to be much slower.
A web page visitor counter or dynamic content such as a web page
calendar are good examples of why a user may use embedded
instructions on his or her web page. Below are some examples of how
a user may implement a Perl script into
their web page and other Server Side Includes.
<!--#exec cmd="cgi-bin/mycounter.cgi"
-->
<!--#include
virtual="/cgi-bin/mycounter.cgi" -->
<insert file="cgi-bin/mycounter.cgi">
<!--#echo var="DATE_LOCAL"
-->
The first line is the most common
method for executing code from a server. However, because of
security risks, an administrator may disable this feature on the
server. The second line is another common example of what is
supported on a server and is the replacement for servers not
supporting the exec cmd. The third example is just another
example of how a server may be setup to execute a file. Finally, the
last line is a method of echoing the local date and time to a web
page.
Additional questions regarding the setup or configuration of
SHTML or SSI should be directed to your administrator
or ISP. If you are the administrator or
are attempting to enable SSI on your server, we recommend you refer
to the documentation of your web server.
Also see: ASP, HTML,
SSI
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