git-update-sub

#!/bin/sh
set -e

if [[ "$1" = "--h" ]] ; then
   echo "Updates the passed submodule to latest: ";
   echo "  - git update-sub <name>";
   echo ""
   echo "Afterwards, the changes will be commited and asked to push to origin"
   echo "You can pass --all to update all submodules"
   exit 1;
fi

target=${1%/}

if [[ "${target,,}" = "--all" ]] ; then
	git submodule foreach git pull origin master

	echo "now the submodules are in the state we want, so commit"
	git commit -am "Pulled down updates to all submodules"
else

	echo "change to the submodule directory: $target"
	cd $target

	echo "checkout desired branch"
	git checkout master

	echo "update"
	git pull

	echo "get back to project root"
	cd ..

	echo "now the submodule is in the state we want, so commit"
	git commit -am "Pulled down update to $target"
fi
	
	
echo "Do you want to push to origin?"
select yn in "Yes" "No"; do
    case $yn in
        Yes ) git push origin HEAD; break;;
        No ) break;;
    esac
done