simple_pattern_writer.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

int main() {
  size_t sz;
  void * buf;

  sz = sysconf(_SC_PAGESIZE);
  buf = malloc(sz);
  memset(buf, 0xff, sz);
  int ret;
  do {
    ret = write(1, buf, sz);
  } while (ret > 0);
  free(buf);
}