Basic commands about subtree

git subtree add   --prefix=<prefix> <commit>
git subtree add   --prefix=<prefix> <repository> <ref>
git subtree pull  --prefix=<prefix> <repository> <ref>
git subtree push  --prefix=<prefix> <repository> <ref>
git subtree merge --prefix=<prefix> <commit>
git subtree split --prefix=<prefix> [OPTIONS] [<commit>]

1. Add subtree

For example

git remote add -f ios git@github.com:zhihuitang/stockholm-rail-ios.git

-f: Pull immediately after adding
Add the library’s remote as if it was my own. This will significantly simplify the commands, so that you don’t have to specify the repository’s address all the time

git subtree add --prefix=ios ios master

Use subtree add to add that repo’s code into a path in the parent’s project, specified by prefix. The last parameter, master, is the branch you are pulling code from (my-subtree/master).

2. Pull sub-repo from remote

git subtree pull —prefix=ios ios master [—-squash]

Pull master branch of sub-repo from remote.

3. Push sub-repo to remote

If you changed something in sub-repo folder and want to push the changes to remote sub-repo, you can do as follows:

git subtree push --prefix=ios ios master [--squash]