submodule

Git submodule allows ro add externel repository in a repository

Adding submodule

• git submodule add http://git/toto.git $path this command add http://git/toto.git in path directory (add -b $branchname to follow specific branch)
• after that you need to add and commit submodule folder

to populate a submodule nested in other submodule

• git submodule init
• git submodule update

removing submodule

• remove submodule entry in .gitmodules
• remove submodule entry in .git/config (only present when git submodule init have been perform)
• remove submodule path git rm --cached $path

Updating submodule

you can update a submodule Manually going in submodule folder and perform a git fetch and git merge

Fetch and merge

automatic process

• perform a git submodule update --remote

in each case you need to commit update in project