How to get the path of a file relative to the Git repository root?

Question

Example:

$ cd lib $ git absolute-path test.c # how to do this? lib/test.c 

Answer 1

As of at least git 1.6.0, use ls-files:

$ cd lib $ git ls-files --full-name test.c lib/test.c 

---

For older git, use git ls-tree:

$ cd lib $ git ls-tree --full-name --name-only HEAD test.c lib/test.c 

This only works for files that have been committed into the repo, but it's better than nothing.