Fos/Exec.c at main · Princepatel20/Fos · GitHub

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#include <stdio.h>

#include <unistd.h>

#include <stdlib.h>

#include <sys/types.h>

#include <sys/wait.h>


int main(void) {

  pid_t pid = 0;

  int status;

  pid = fork();


if (pid == 0) {

  printf("I am the child.");

  execl("/bin/ls", "ls", "-l", "/home/ubuntu/", (char *) 0);

  perror("In exec(): ");

}


if (pid > 0) {

  printf("I am the parent, and the child is %d.\n", pid);

  pid = wait(&status);

  printf("End of process %d: ", pid);


  if (WIFEXITED(status)) {

    printf("The process ended with exit(%d).\n", WEXITSTATUS(status));

  }

  if (WIFSIGNALED(status)) {

    printf("The process ended with kill -%d.\n", WTERMSIG(status));

  }

}

if (pid < 0) {

  perror("In fork():");

}

exit(0);

}