nano text editor in Linux CLI - Commands & Configuration

Introduction

Sometimes you need to quickly create or edit a text file on a Linux system. Nano is a simple text editor that runs in the terminal and helps you do this easily without complicated commands.

When you want to quickly write a configuration file on a server without a graphical interface

When you need to edit a script or note directly from the command line

When you want a simple editor that shows commands at the bottom for easy use

When you are new to Linux and want an easy way to edit files without learning complex editors

When you want to make quick changes to text files during troubleshooting or setup

Commands

This command opens the file named example.txt in the Nano editor. If the file does not exist, Nano creates a new empty file with that name.

Terminal

nano example.txt

Expected Output

No output (command runs silently)

Inside Nano, pressing Ctrl+O saves the current file. You will be asked to confirm the file name before saving.

Terminal

Ctrl+O

Expected Output

File Name to Write: example.txt

Pressing Ctrl+X exits Nano. If there are unsaved changes, Nano will ask if you want to save before quitting.

Terminal

Ctrl+X

Expected Output

Save modified buffer (ANSWERING "No" WILL DESTROY CHANGES) ?

This command shows the contents of example.txt in the terminal to verify your changes.

Terminal

cat example.txt

Expected Output

Hello, this is a test file.

This line was added using Nano.

Key Concept

If you remember nothing else from Nano, remember: Ctrl+O saves your file and Ctrl+X exits the editor safely.

Common Mistakes

Trying to save the file by pressing just Enter or Escape

Nano requires Ctrl+O to save; pressing Enter or Escape alone does not save changes.

Press Ctrl+O to save, then Enter to confirm the file name.

Exiting Nano with Ctrl+C or closing the terminal without saving

This causes loss of any unsaved changes.

Always use Ctrl+X to exit and save changes when prompted.

Summary

Use 'nano filename' to open or create a text file in Nano editor.

Press Ctrl+O to save your changes and Ctrl+X to exit Nano.

Use 'cat filename' to view the file contents after editing.