How can one determine the version of Apache webserver installed on a system?
From the command line type:
You’ll get results similar to this:
Server version: Apache/2.0.54
Server built: Aug 22 2005 06:27:29
So in this case the version is 2.0.54.
You can get similar information by requesting a non-existent page from the server with your web browser. The server version will be displayed at the end of the error message.