Emacs is one of the oldest and most versatile text editors available for UNIX-based systems. It's been around for a long time (more than twenty years for GNU emacs) and is well known for its powerful and rich editing features.
Emacs is also more than just a text editor; it can be customized and extended with different "modes", enabling it to be used like an Integrated Development Environment (IDE) for programming languages like Java, C or Python.
For those who have used both the ubiquitous vi and the user-friendly nano, emacs would come as an interesting cross-between. Its strengths and features would resemble those of vi while its menus, help files and easy-to-remember command-keys would compare with nano.
In this article, we will see how we can install emacs in a Linux system and use it for basic text editing. Emacs is also available for graphical window managers, however we will only cover the "text based" version here.

Open a file, or create it like this:

    emacs file1.txt
And then follow the simple manual that will be open.