sh and source command
 

what is the difference between sh and source command of unix?

Why didn't you look where you were posting? sh is a shell, source is for "evaluating a file or resource as a Tcl script".

@jjangid

Open a console and type "man sh" (without the quotes of course), and then "man source".

This will tell you that sh is a shell (the original shell, by the way), and that source is a shell builtin.

A builtin is a command that is built into the shell, and is not a separate program in /bin or /usr/bin. I would say that there are about 65 of these. Unless you plan to learn shell scripting, you will probably not need to worry about many of them.

Moved: This thread is more suitable in Linux-General and has been moved accordingly to help your thread/question get the exposure it deserves.