JustinP

#include <stdio.h>#include <fcntl.h>#include <stdlib.h>#include <sys/ioctl.h>int main(int argc, char ** argv) {  int fd = open("/dev/fb0", O_WRONLY|O_NONBLOCK );  int on;  int res = 0;  if (argc != 2) {    printf("You must specify on or off\n");    return 0;  }  on = !strncmp(argv[1], "on", (strlen(argv[1]) > 1 ? 2 : 1));  printf((on ? "on\n" : "off\n"));  if ( fd )    {      int ioctlnum = 0x4611;      int vesaMode = on ? 0 : 3;      res = ioctl ( fd, ioctlnum, vesaMode );      printf("%i\n", res);      close ( fd );    }  else    {      printf("failed\n");    }  return res;}