Execute and print state

Check if we have enough arguments. Create a child process and save its identifier (pid). The parent process waits for the child process and exits on error. On success, the termination status is printed. The child process executes the command in the arguments.

exec-stat.c

#include <sys/types.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
int main(int argc, char * argv[])
{
   int pid, status;
   if (argc < 2) {
     printf("Usage: %s command, [arg1 [arg2]...]\n", argv[0]);
     return EXIT_FAILURE;
   }
   printf("Starting %s...\n", argv[1]);
   pid = fork();
   if (pid == 0) {
     execvp(argv[1], &argv[1]);
     perror("execvp");
     return EXIT_FAILURE; // Never get there normally
   }
   else {
     if (wait(&status) == -1) {
       perror("wait");
       return EXIT_FAILURE;
     }
     if (WIFEXITED(status)) printf("Child terminated normally with exit code %i\n", WEXITSTATUS(status));
     if (WIFSIGNALED(status)) printf("Child was terminated by a signal #%i\n", WTERMSIG(status));
     if (WCOREDUMP(status)) printf("Child dumped core\n");
     if (WIFSTOPPED(status)) printf("Child was stopped by a signal #%i\n", WSTOPSIG(status));
   }
   return EXIT_SUCCESS;
}