Slide 23 of 42

Process Management - exec

• 6 forms: execl, execve, execvp, execv, execve, execvp

if ( (pid = fork()) < 0)
   perrror("fork");
else if (pid == 0)              /* child */
{
   if (execl("/bin/echo", "echo", "child:", "hello", "world", (char *) 0) < 0)
      perror("execl");
   printf("child: this never prints\n");
}