How to Compare Two Directories on Linux

While migrating a couple of Bazaar repositories to git, I experienced some problems with one Bazaar repository, or let’s say the exporter did not work properly on one of its commit.

In order to find out what exactly happened, I needed to compare both the tip of the git and the Bazaar repository.

Turns out, diff can not only compare files, but also directories… recursively!

$ diff -qr bzr/wadllib/ git/wadllib/
Only in bzr/wadllib/: .bzr
Only in git/wadllib/: .git
Only in bzr/wadllib/: MOVED_TO_GIT
Only in git/wadllib/src/wadllib: diff
Only in git/wadllib/src/wadllib/docs: __init__.py
Only in git/wadllib/src/wadllib: _utils