Question :
One day I cloned a library in github and there was an instruction to use the git submodule update command.
I have been working with git for some time and I was not aware of this command until then.
What is this submodule command for?
Answer :
Wallace,
This command is useful when you want to insert another git repository into your main project (a library, for example).
For git the submodule will be a totally independent project. You can edit the contents below the submodule folder, commit, push, etc. Provided you have permission to do so:)
There are alternatives, such as package managers, that organize dependencies in other, more efficient and secure ways.