Since 2005, I've been backing up my data regularly, but unfortunately, I've never sorted the backed up data. When that data comes from several computers, there is only one outcome: Duplicate files!
Fortunately, there is a tool in the Ubuntu package repository called
Finding duplicate files with fdupes
The command I used was:
fdupes backup --omitfirst --recurse > duplicate_files
backup is the directory where I keep my backups (mounted over nfs).
--omitfirst makes fdupes not print the first file it finds a
--recurse makes fdupes recurse into subdirectories.
If you feel confident, you can make fdupes delete files there are duplicates of, like so:
fdupes some_directory --recursive --delete --noprompt
Written by Jannich Brendle ons 14 september 2011 In How to