Fork Programming in C at Linux Environment

Question

Can anyone help me to know the fork process in c Programming and how it's working on the real time application.And sample program for that.

I'm sorry, I can't quite tell what you're meaning to ask. Are you asking for an example of how to use `fork()` in C? If you are, there's an example on the [Wikipedia article](http://en.wikipedia.org/wiki/Fork_(operating_system)) for `fork()`. — Jordan Wade, Jun 29 '11 at 06:08
possible duplicate of [fork() execution process](http://stackoverflow.com/questions/5010359/fork-execution-process) — Fred Foo, Jun 29 '11 at 06:26

score 3 · Answer 1 · edited Aug 18 '17 at 05:30

3

#include <stdio.h>
#include <unistd.h> 

int main()
{
    pid_t pid;
    pid = fork();

    if(pid == 0){
        printf("child process\n");
    }
    else{
        printf("parent process\n");
    }
    return 0;
}

edited Aug 18 '17 at 05:30

EsmaeelE

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answered Aug 01 '12 at 11:40

Shibin k.reeny

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"fork() returns twice, once in parent and once in child" should clear further questions... – ernesto Jul 25 '13 at 10:45

score 1 · Answer 2 · edited Nov 23 '14 at 10:54

The complete reference of the C libraries is already on your PC, if it has Linux on it, at least. You can find almost every system call / supported C function via the man pages. Try typing man fork at the console and see what magic happens. :) You can search in the man pages by pressing the / key then type your string and press enter after that you can search for the next occurrence by pressing n. Good luck!

score 0 · Answer 3 · edited May 23 '17 at 11:44

0

Wikipedia states

Fork-exec is a commonly used technique in Unix whereby an executing process
spawns a new program

Related SO question : Applications of fork system call

Sample code: http://www.yolinux.com/TUTORIALS/ForkExecProcesses.html

edited May 23 '17 at 11:44

Community

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answered Jun 29 '11 at 06:13

Praveen S

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Fork Programming in C at Linux Environment

3 Answers3