git submodule add <repository-url> <path>repository-url - remote Git repository to add
path - relative path to the submodule, including itself
git clone --recurse-submodules <main-repository-url>git submodule init
git submodule updategit submodule update --remotegit submodule deinit <path>
git rm <path>git submodule foreach '<command>'git submodule statusgit pull --recurse-submodulesDavid D.