Determine if directory is under git control

Question

How can I tell if a given directory is part of a git respository?

(The following is in python, but bash or something would be fine.)

os.path.isdir(\'.svn         


        

Answer 1

In ruby, system('git rev-parse') will return true if the current directory is in a git repo, and false otherwise. I imagine the pythonic equivalent should work similarly.

EDIT: Sure enough:

# in a git repo, running ipython
>>> system('git rev-parse')
0

# not in a git repo
>>> system('git rev-parse')
32768

Note that there is some output on STDERR when you aren't in a repo, if that matters to you.