Can I use Git to search for matching filenames in a repository?

Question

Just say I have a file: "HelloWorld.pm" in multiple subdirectories within a Git repository.

I would like to issue a command to find the full paths of all the files matching "HelloWorld.pm":

For example:

/path/to/repository/HelloWorld.pm
/path/to/repository/but/much/deeper/down/HelloWorld.pm
/path/to/repository/please/dont/make/me/search/through/the/lot/HelloWorld.pm

How can I use Git to efficiently find all the full paths that match a given filename?

I realise I can do this with the Linux/Unix find command but I was hoping to avoid scanning all subdirectories looking for instances of the filename.

Answer 1

Try:

git ls-tree -r HEAD | grep HelloWorld.pm