UNIX for Dummies Questions & Answers

Hi All
I have found that few basic commands in unix have the same syntax in linux as well. I need those commands which differ on Linux platform, with some more advanced options..
For example... awk, sed, tr ... and some more commands with advanced options. I am trying to search on the linux sites.

But help from your end will also be appreciated.

There is some confusion here.

POSIX is a set of standards, one of the things it speaks to is the commands, options, and what the options mean.

So, if you go onto a POSIX-compliant box, all of the commands + options mentioned above behave identically. The boxes are free to have other options, if they want, for those same commands.

So your division into "UNIX" and "Linux" may not be a simple as you think. Plus, a lot of the GNU (GNU coretutils distribution) commands that come with Linux have the same base set of options, possibly with extras as well.

Your best bet is to go to Front Page | The Open Group, search for a command like tr and read the specs, then get a copy of the full documentation set from Coreutils - GNU core utilities -- compare based on that.

This is an odd enough endeavor to ask: is the homework?