Tell them that those who can do, and those that can't teach.
I get the feeling you're in my boat of being the dude that knows a little bit about Linux, so everyone goes to you asking questions and you're like "Hell if I know" and start experimenting until it happens, and then everyone's like "How'd you do that?" and you still don't quite know.
"Doom means two things: demons and shotguns." -John Carmack