Add git notes

git/git-submodules.txt

@@ -0,0 +1,41 @@
+add submodule:
+git submodule add [url]
+
+
+config:
+diff:
+git config --global diff.submodule log
+(git diff --submodule)
+status:
+git config status.submodulesummary 1
+submodule commands:
+git config submodule.recurse true
+
+
+cloning:
+git clone [url]
+git submodule init
+git submodule update / git submodule update --init
+or
+git clone --recurse-submodules [url]
+
+
+change branch:
+git config -f .gitmodules submodule.[name].branch [branch]
+
+
+fetch updates for submodules
+git submodule update --remote [name] (first update)
+git submodule update --init --recursive (update all)
+git submodule update --remote --merge (fetch and merge)
+git pull --recurse-submodules
+in case url changed:
+git submodule sync --recursive
+
+
+upload updates for submodules:
+git push --recurse-submodules=(check/on-demand)
+
+
+other:
+git submodule foreach '[command]'