what is the difference between fork and exec command?
 

Hi friends,

Can anybody tell me what is the difference between fork and exec command?

Regards

Brownaryan

fork executes two child processes, exec turns over execution to a new process.

exec behaves the same as forking a process, then exiting the unforked branch.

Read the manual.

exec:
The exec() family of functions replaces the current process image with a new process image.
[translation: Uses the process structures of the calling process to run a new program.]

fork:
fork() creates a new process by duplicating the calling process.

Simple really - they don't have anything to do with eachother.