how do i know if a submodule has changed in git?

Question

Currently I have a few submodules in my parent project. How can I tell if one of the submodules has recently changed and I need to do a

git submodule foreach git pull origin master

Answer 1

git pull --recurse-submodules=yes

Answer 2

Submodules are nothing more then nested git repositories.

Try this command, I don't have any repositories with submodules to test it on.

git submodule foreach 'echo $path `git status`'