Linux treats almost everything as a file, and text files (.txt) are the most common medium for configuration, logs, and documentation. Whether you are a desktop user or a system administrator managing a remote server via SSH, knowing how to efficiently open and interact with these files is a fundamental skill.

For those looking for a quick command to use in the terminal:

  • To view only: cat filename.txt
  • To read with scrolling: less filename.txt
  • To edit: nano filename.txt

The method you choose depends on whether you have a graphical interface, the size of the file, and whether you need to make changes or simply read the content.

Accessing Text Files via Graphical User Interface (GUI)

Desktop environments like GNOME, KDE Plasma, and XFCE make opening text files as simple as in any other operating system. For users who prefer a mouse-driven workflow, the File Manager is the starting point.

Using the File Manager

Most Linux distributions come with a default file manager—Nautilus in Ubuntu, Dolphin in Kubuntu, or Thunar in XFCE.

  • Double-Click Action: Locating your file and double-clicking it will trigger the system's default text editor. On Ubuntu, this is usually Gedit; on KDE, it is Kate; and on lightweight distros, it might be Mousepad or Leafpad.
  • The "Open With" Menu: If you have multiple editors installed (like VS Code, Sublime Text, or Bluefish), right-click the file and select Open With Other Application. This allows you to choose a specific tool for that session or set a new permanent default.

The Advantage of GUI Editors

GUI editors are ideal for complex editing tasks where you need syntax highlighting, multiple tabs, or a global search-and-replace feature across several open documents. They provide a familiar environment for those transitioning from Windows or macOS, offering traditional keyboard shortcuts like Ctrl + S to save and Ctrl + F to find.

Opening Text Files via the Linux Terminal (CLI)

The terminal is where Linux truly excels in efficiency. When managing servers or working with automation, graphical tools are often unavailable. Mastering command-line tools allows you to inspect files without leaving your keyboard.

The cat Command: Quick Output

The cat (concatenate) command is perhaps the most famous utility for displaying file contents. It reads the file and prints the entire content directly to the terminal screen.