Are you serious? An easter egg hunt in command line?
If somebody makes a living administering Linux servers, they live and breath CLI. If a system admin can't find the httpd.conf for either server and their associates virtual host files in a heartbeat, they should look for a new job.
I am also not sure where you get the idea that Apple expects you to use the server admin app.
Apple's Server documentation describes each function and task to be performed either in command line or via app.
He was responding to a poster who incorrectly assumed that Linux and Mac OS X Server are exactly the same: i.e. they share all the same commands, all commands behave exactly the same on both systems, all files are located in the same places on both systems, and that anyone who knows Linux command line administration can just get on a Mac OS X Server system and do everything exactly the same way, with no modifications.