to be fair most of them are just common sense if you know the way around command-line, and rest of it just matter a search in manual.
anyway very useful info.
Fantastic for those of us who are not sys-admins (i.e., don't use every common command everyday,) but still work within these environments and occasionally forget a command and / or it's common flags (ohh, and we do not want to flip through the fifty page manual for said command.)
i remember writing college term papers with vi on an HP machine the size of a Buick and arguing that it was better than Word for DOS. thank God for GUIs!
It may be a Linux and FreeBSD and/or GNU cheat sheet, but it is not a Unix cheat sheet. It's missing Solaris, IRIX, and HPUX. I was working on an old IRIX system and almost none of the GNU commands will work on those systems.
I hate to be "that guy" But this is just a GNU commands list not Unix... And they are all commands that any user should already know. Put together a HowTo that gives good VI tips or how to use sar better.
Wonderful... it's the kind of thing where you /think/ you know most of these commands by heart (for instance adding users from terminal), but when you're stuck without a GUI and find yourself having to do something, you're cursing yourself for ever using GUI apps to begin with.
These commands are quite useful from a sys-admin's perspective, though there are many more available from the developers and DBA's point of view. Similarly as noticed earlier some more OS specific stuff are missing - AIX, Solaris, HP-UX.