Finds duplicate files based on SHA-1 hash of file contents.
##Options
-r
: recurses on subdirectories
-D
: removes duplicates by preserving the first file and deleting all others that share the same sha1_id
.
<index>:<sha1_id>:<path>
index
: human-readable, numeric index
sha1_id
: first 4-bytes of the SHA-1 hash
path
: path of the duplicate