[Q] Searching for a Howto - Ubuntu SDK build QML APP runs system commands topic

Hello,
sorry about my poor english.
Searching for a step by step how to to build a QML App for Ubuntu Touch.

- How to run system commands like " ls -la > test.txt "
- How to translate the Buttons, Texts etc.
- How to create a button to exit the App
- How to include a Icon for the App

I have installed a Ubuntu 14.04.2 (amd64) and Ubuntu SDK 1.126
can create a Simple QML App and install it on my Ubuntu Phone.
But no Icon, an did not sucess to run system commands.
Thanks for help.

xda-developers