submodules

Submodule is only a link to commit ref in another repo.

Adding submodule:

git submodule add <repository> [<relative_local_path>]

After cloning master repo with submodules:

git submodule init
git submodule update

alternatively repo can be clonned with

git clone --recursive <url>

git submodule update --init --recursive
git fetch --recurse-submodules

Removing submodule:

• git submodule deinit lib/lib_to_be_deleted

• remove entry in .gitmodules
• stage .gitmodules
• ? remove entry in .git/config
• remove dir: git rm –cached lib/lib_to_be_deleted
• remove module content: rm -rf .git/modules/lib_to_be_deleted