How can I view all the git repositories on my machine?

Question

Is there a way in which I can see all the git repositories that exist on my machine? Any command for that?

Answer 1

Git repositories all have HEAD, refs and objects entries.

on GNU/anything,

find -name HEAD -execdir test -e refs -a -e objects \; -printf %h\\n

Just checking for .git will miss many bare repos and submodules.

To go full-paranoid on the checking you can ask git to do all its own checks before printing,

find -name HEAD -execdir test -e refs -a -e objects \; \
      -execdir sh -ec 'GIT_DIR=$PWD git rev-parse --absolute-git-dir 2>&-' \;

(edit: I thought the .git/config file was necessary, turns out it's not, so the absolute minimum git init newrepo is

mkdir -p newrepo/.git/{objects,refs}
echo ref: refs/heads/master >newrepo/.git/HEAD

)