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nano Tutorial: Editing Files in the Terminal on Linux and macOS
nano is the beginner-friendly terminal text editor — no modes to learn, shortcuts shown at the bottom of the screen, and installed by default on most Linux distributions. This tutorial walks through nano from installation on Linux and macOS, through file operations, cursor movement, cut/copy/paste, undo/redo, and search and replace, to syntax highlighting and line numbers via .nanorc. Includes a full keyboard shortcut reference and workflow examples for editing system configs, setting nano as your default editor, and using it inside tmux.