execls.c

this gives details of the network programming

/* This program just shows how to use the exec system call
   to start a new program (in this case ls)
*/

#include <stdio.h>

char *args[] = {"/bin/ls", NULL};

/* If all goes well, execls will never return, since the program
   is replaced with ls
*/

void execls(void) {
  execv("/bin/ls",args);
  printf("I'm not printed\n");
}

int main(void) {
  execls();
  return(0);
}