e:~/projects/r/skripti[0]# ./largest_matching_area.php <(./pseudo_random_bytes.php) /dev/mmcblk0 
reading stopped after 8192128 successfully read chunks, largest matching area starts at chunk 0 and is 1919731 chunks long. chunk size is 8192.
PHP Notice:  fwrite(): Write of 8192 bytes failed with errno=32 Broken pipe in /root/projects/r/skripti/pseudo_random_bytes.php on line 14
pseudo_random_bytes fwrite failede:~/projects/r/skripti[0]# echo $((1919731*8192))
15726436352
e:~/projects/r/skripti[0]#