Website of linux command examples

I've seen a wiki-like page of Linux command examples.
Unfortunately I failed to bookmark it.

I had seen it referenced in a post. Thinking it was on the debian-user 
mailing list, I asked there but got only references to discussions about 
why man pages have few examples {i.e. practicality}.

The site I'm thinking of:
   1. does not duplicate man page content.
   2. does not aim to be a tutorial
   3. apparently aims to include as many commands as possible.
      {I've found several pages of "... most popular commands"}
   4. has no graphics and no fancy formatting {simple paragraph style}.

Suggestions?
TIA