1)What is Termux?

Termux is an Linux based Terminal emulator for Android.

It is command line interface. It have many commands similar to other Linux distribution (distro's) such as kali, mint, ubuntu.

Termux have many different repositories.
It also have pen tool(metasploit) and cracking tools such as aircrack-ng.

2)Why termux?

It is best linux terminal for Android.

If you're a beginning in hacking or programing field then this application helps you to learn basic to advance in Linux.

One of the best region that why use Termux is any distribution (distro's) can installed and gui can be installed using VNC server.

Termux has a good community so if you stuck in anh problems then number of tutorial in video or website are available.

In next tutorial I will show the basic commands and operation on sdcard.