c - Server/Client comunication through pipe -


i started learning ipc , have issues. wrote program creates 2 processes communicate through pipe this:

#include <stdio.h> #include <stdlib.h> #include <errno.h> #include <sys/types.h> #include <unistd.h>   int main(void) {     int pfds[2];     char buf[30];     pipe(pfds);     if (!fork())      {         printf(" child: writing pipe\n");         write(pfds[1], "test", 5);         printf(" child: exiting\n");         exit(0);     }      else      {         printf("parent: reading pipe\n");         read(pfds[0], buf, 5);         printf("parent: read \"%s\"\n", buf);         wait(null);     }     return 0; }

sorry not handling potential errors, wrote simplicity.

this works great question is: there possibility have 2 programs - server/client(two separate executables - not parent process/child process relationship) communicate through pipe? can through fifos?

thank you!

a regular pipe can connect 2 related processes. created process , vanish when last process closes it.

to communicate between 2 separate processes must use named pipes (fifo).


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