A free program for Android, by Sagar V Hande.
This is the complete guide for learning and using the Unix operating system and its related programs, including the top 10 commands you should know.
This guide will help you understand how to use the command line interface of Unix in the simplest way and will provide you with the knowledge you need to become an expert in this field.
It will teach you how to use the most important commands of Unix, such as how to create and manage files, how to create and delete directories, how to change the current directory, how to change the date and time, etc.
It will also help you understand how to use the command line interface of Unix to perform different tasks, such as how to backup a file, how to restore a file, how to check the current time, etc.