DedupeCopy is a simple multi-threaded file copy tool designed for consolidating and restructuring sprawling file systems.
The most common use case is for backing up data into a new layout, ignoring duplicated files.
Other uses include:
1. Getting a .csv file describing all duplicated files
2. Comparing different file systems
3. Restructuring existing sets of files into different layouts (such as sorted by extension or last modification time)
This tool is *NOT* a Robocopy or rsync replacement and does not try to fill the role those play.
As with all code that walks a file tree, please use with caution and expect absolutely no warranty!
Generate a duplicate file report for a path:
dedupe_copy.py -p /Users/ -r dupes.csv -m manifest
Copy all *.jpg files from multiple paths to a /YYYY_MM/*.jpg structure
dedupe_copy.py -p C:\pics -p D:\pics -e jpg -R jpg:mtime -c X:\pics
Copy all files from two drives to a single target, preserving the path for
dedupe_copy.py -p C:\ -p D:\ -c X:\ -m X:\manifest -R *:no_change
Resume an interrupted run (assuming "-m manifest" used in prior run):
dedupe_copy.py -p /Users/ -r dupes_2.csv -i manifest -m manifest
Sequentially copy different sources into the same target, not copying duplicate files (2 sources and 1 target):
1.) First record manifests for all devices
dedupe_copy.py -p \\target\share -m target_manifest
dedupe_copy.py -p \\source1\share -m source1_manifest
dedupe_copy.py -p \\source2\share -m source2_manifest
2.) Copy each source to the target (specifying --compare so manifests from
other sources are loaded but not used as part of the set to copy and
--no-walk to skip re-scan of the source):
dedupe_copy.py -p \\source1\share -c \\target\share -i source1_manifest
--compare source2_manifest --compare target_manifest --no-walk
dedupe_copy.py -p \\source2\share -c \\target\share -i source2_manifest
--compare source1_manifest --compare target_manifest --no-walk
Assuming you start with a set of files laid out as follows:
And you run the command:
> dedupe_copy.py -p C:\pics -p D:\pics -e jpg -R jpg:mtime -c X:\photos
You would end up with the following (photo3.jpg was a true duplicate):
This project is on bitbucket: http://www.bitbucket.org/othererik/dedupe_copy