Git Submodules

Oft-used, never understood.

References

• Git SCM
• man git-submodule

Add a Submodule

git submodule add <URL>

This creates a .gitmodules file that shows the mapping between your project and its submodules.

Clone with Submodules

1. clone your project as normal
2. git submodule init to initialize from .gitmodules
3. git submodule update to fetch data from the commit referenced at the other end of the .gitmodules repo URL