danielsdeleo

#include <stdio.h>
#include <sys/select.h>
#include <fcntl.h>
#include <stdlib.h>

int main(int argc, char ** argv) {
  char * dev_short = (argc > 1) ? argv[1] : "sda1";
  char dev[512];
  snprintf(dev, sizeof(dev), "/sys/block/%s/size", dev_short);