How do I perform search for the path in linux? if I want to find the path of KDE or mozilla how do i find? any commands pls?

read "man updatedb" and "man locate"

basically you create a file location datebase with the command updatedb, and search the database with the locate command.

Your question seems to be a bit malformed, but here goes.

There really is no such thing as the path, in the sense that if you look around hard enough you'll find a file that says "path". Instead it's a bash environment variable that tells your shell where all your executables are at.

Assuming you're using bash you can view where the path refers to by opening a terminal and typing this at the command line "echo $PATH", sans the double quotes of course.

By path I'm assuming where you want to know where the executable is on your system. You should achieve enlightenment by typing "man whereis" on the command line and reading the resulting text.

Also KDE is not just one executable. It's a whole buttload of them. Mozilla, on the other hand, is just one executable. It can be found by typing "whereis mozilla" at the command line, but please do so only after reaching an enlightened state.

Hope that helps.

which mozilla