Mine

sspencer@sspencer-p670:~/poa.jpg$ python ../jfif-explode.py .original 
sspencer@sspencer-p670:~/poa.jpg$ du -k .original .parts/* | sort -k 2
31052   .original
4       .parts/00
4       .parts/01
4       .parts/02
4       .parts/03
8       .parts/04
4       .parts/05
4       .parts/06
4       .parts/07
4       .parts/08
4       .parts/09
4       .parts/10
4       .parts/11
4       .parts/12
4       .parts/13
4       .parts/14
4       .parts/15
4       .parts/16
4       .parts/17
4       .parts/18
4       .parts/19
31048   .parts/20
4       .parts/21
sspencer@sspencer-p670:~/poa.jpg$ md5sum .original 
c4fb9d2330f5799c949b4ab24315e8e9  .original
sspencer@sspencer-p670:~/poa.jpg$ cat .parts/* | md5sum
c4fb9d2330f5799c949b4ab24315e8e9  -