mess with data in files using node
img/codfish.munged.jpg
was created by running
$ node ./cmd --input img/codfish.jpg --skip 10000 > img/codfish.munged.jpg
and img/codfish.munged.random1.jpg
through img/codfish.munged.random3.jpg
were created by running
$ node ./cmd --input img/codfish.jpg --skip 10000 -r random
three times with the output directed to the three images
if you look at the source you will notice that this "needs more work"