List all blob object hashes and their filenames in a git repo.
go get -u github.com/tomnomnom/hacks/gittrees
▶ gittrees ~/path/to/repo
79e0815a8c82d0f1f8f467b01d97143a8fed7048 .gitignore
b7214221c4b62b4712f783c2b7c3b8fc4f076fbc .travis.yml
2fa1a8731c67462f4eef8ae6b92623a2cc726a5d ADVANCED.mkd
870261d35c7e56ae4d1fb70551a0aa80c672116e CHANGELOG.mkd
ec81b112e749edd9e921f0aad437495cb25427f8 CONTRIBUTING.mkd
55192df5648b00be23225d407467373710701533 LICENSE
6c36ac1718f767df67d1e497c0d310091c2228ed README.mkd
e5a27f321140e1b7c532ced80b7bcd8099ec300b docs/images/bareword.png
431e850a97057167863082082af9951ab233130b docs/images/input.png
c94339d0f1e05b5a80972eccc968c60f048a19ec docs/images/key.png
...
You might want to grep the contents of these objects. As an example, here's how you could grep the contents of all objects in the current repo that were/are js files for 'console.log':
▶ gittrees | grep '\.js' | cut -d' ' -f1 | git cat-file --batch | grep -a 'console.log'