## Before we Use ### Installing Terminal APP We choose **Termux** as the Terminal APP as it is the powerful Linux simulator. 1. Dowloading From both [GitHub](https://github.com/termux/termux-app/releases) or [F-Droid](https://f-droid.org/en/packages/com.termux/) to download is OK. 2. Installing *APK* file is easy to install and you must know it without my instruments, you can see something like below after opening this app. 3. Finish OK, congratulations for ok installing *Termux*. ### Installing Runtime Environment 1. Installing **Python** ```bash apt-get install python3 ``` The picture left below is while you may enter `Y` to continue. Aftering succeed in installing you will see as right bicture below.