The latest articles on DEV Community by Jini (@bytesbyjini). https://dev.to/bytesbyjini https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3638200%2Fab9981ed-7b8e-4274-bd75-112ce32549e9.jpeg https://dev.to/bytesbyjini en Jini Mon, 01 Dec 2025 07:24:18 +0000 https://dev.to/bytesbyjini/the-relationship-between-the-terminal-cli-shell-and-the-kernel-1h1b https://dev.to/bytesbyjini/the-relationship-between-the-terminal-cli-shell-and-the-kernel-1h1b <p>Lately, I've been refreshing my memory on Operating Systems, their different parts, and functions. I became confused about the exact <u>difference between a terminal and a Command Line Interface <em>(CLI)</em>.</u> This entire time I've been thinking they're the same thing but turns out they're not 😬 </p> <p>After doing some research, I was able to understand the clear distinction between the two. I've found the analogy below helpful in making that distinction.</p> <h2> Analogy </h2> <p><strong>You</strong> go into a restaurant and notice they have various <strong>tablets</strong> lined up at the counter for you to place your order. Each provides a UI displaying the restaurant's <strong>menu</strong> as a set of selectable options. You go towards one, select a food category, choose an item, and place your order. </p> <p>The <strong>restaurant's software system</strong> then translates all your selections into a structured ticket that prints out for the <strong>kitchen</strong> staff to read and prepare your order.</p> <h2> Metaphor Breakdown </h2> <p><strong>You</strong> = User who is inputing a request</p> <p><strong>Tablet</strong> = Terminal <br> The <em><u>environment/interface</u></em> where the <u>interaction</u> happens between you <em>(user)</em> and the kitchen staff <em>(kernel)</em>.</p> <p><strong>Menu</strong> = CLI <br> The <em><u>method</u></em> of communication that allows you to input a set of commands <em>(selectable options)</em> to interact with the kitchen. </p> <p><strong>Restaurant's software system</strong> = Shell <br> A <em><u>program</u></em> that translates your input into a format that the kitchen staff can better understand.</p> <p><strong>Kitchen</strong> = Kernel <br> The heart of the restaurant, which receives the "translated" order and executes it. </p> <h2> Technical Explanation </h2> <p>When a user opens a terminal window, it starts a shell program, which provides the user with a CLI: a text-based method of interaction that allows the user to run a set of commands.</p> <p>The user then enters text-based commands → the shell translates them into a format that the kernel understands → sends them to the kernel → kernel executes them → the result/output is displayed in the terminal window.</p> <p>These components are interconnected, but they all play a unique role in providing us with a simple way of interacting with our computer's hardware.</p> cli terminal shell kernel