Web Reference: Jan 9, 2026 · The cat (concatenate) command in Linux is used to view, create, and combine file contents directly from the terminal. It allows users to quickly work with file content without opening a text editor. Before going into how to use the catcommand, let’s start by reviewing the basic syntax. The cat utility expressions take the following form: 1. OPTIONS - cat options. Use cat --helpto view all available options. 2. FILE_NAMES- Zero or more file names. Learn how to use the cat command in Linux to concatenate and display files. Complete guide with syntax, examples, options, and best practices for file management.
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