| BSD | Berkeley Standard Distribution, a type of Unix |
| IANAL | I am not a lawyer |
| IIRC | If I recall correctly |
| IMHO | In my humble opinion |
| IMNSHO | In my not so humble opinion |
| IMNSFHO | In my not so fucking humble opinion |
| LOL | I am an easily-amused, AOL-using idiot |
| NSFW | Not safe for work |
| RTFM | Read the fucking manual |
| STFW | Search the fucking web |
| YMMV | Your mileage may vary |
| WTF? | What the fuck? |
| *nix | The Unix operating system and its derivatives, such as Linux, (Free|Net|Open)BSD, Solaris, Xenix, HP/UX, Ultrix... |
More of these may be found at AcronymFinder.com, The Jargon File and the Free Online Dictionary of Computing.