I don't remember my ICQ number but I can remember a dozen F2P MMOs from the early / mid-2000s and most of my usernames but I need to look up `tar -xvzf` every time even with an awareness of the Arnold Schwarzenegger meme.
The brain remembers what it wants to remember.
Had to look up the meme, as I couldn't remember it. I think gentoo or slackware made me remeber -xvzf