Configure SSI support

Supports SSI settings.
SSI ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~
Enable the settings file and search for the following text:
#
# To use server-parsedHTMLfiles
#
# AddType text/html. shtml
# AddHandler server-parsed. shtml
Delete the # symbol before the AddType and AddHandler commands. The AddType command requires the server to return any attached file name.
When it is a .shtml webpage, text or HTML is used as the content format of the returned file. AddHandler is used to instruct the server
It is sent to mod_include for processing. Then, mod_include will determine how to respond to such a file. Next, search for the following text:
There will be a line of option line (options line) between this line of text and corresponding lines ). The original settings are as follows:
Options Indexes FollowSymLinks MultiViews
When the end of this line is added with the pair Des, the result looks like this:
Options Indexes FollowSymLinks MultiViews Includes
This requires Apache to execute the server-side pair des program in the htdocs subdirectory. To make these changes take effect, we must
Restart the server. Run "kill-HUP 'cat/usr/local/apache/logs/httpd. Pi'" to reactivate the service on Unix '".