gistfile1.txt

#!/bin/sh
echo "+--------------------------+";
echo "| Uninstalling application |"
echo "+--------------------------+";
adb devices | tail -n +2 | cut -sf 1 | xargs -I {} adb -s {} uninstall [com.your.app/.Name]
echo "+------------------------+";
echo "| Installing application |";
echo "+------------------------+";
adb devices | tail -n +2 | cut -sf 1 | xargs -I {} adb -s {} install [path-to-apk]
echo "+----------------------+";
echo "| Starting application |"
echo "+----------------------+";
adb devices | tail -n +2 | cut -sf 1 | xargs -I {} adb -s {} shell am start -a android.intent.action.MAIN -n [com.your.app/.Name]

I will try it and see what it gives