Is it possible to use mutex in multiprocessing case on Linux/UNIX ?

Question

This is an interview question.

Is it possible to use mutex in multiprocessing case on Linux/UNIX ?

My idea: No, different processes have separate memory s

Answer 1

Yes, in general in Linux we have only unnamed mutexes due to which they cannot operate between processes. We need a semaphore to get over that.

In windows, they have a concept of named mutexes which lets us use mutexes across processes.