contrib/clink

[>DESCRIPTION]

.B clink
compares the sha256 and md5 hashes of each regular file found under the 
paths passed as arguments, so as to identify duplicate files and move them to 
<parent_dir>\fB/common-files\fP (this directory will be created as needed, 
possibly with a numerical suffix to avoid overwriting an existing path). 
Symlinks are placed in the original directories pointing to the new location.