Mastering the Command Line for Test Automation Beginners - Linux and DOS Basics

Mastering the Command Line: A Beginner’s Guide to Linux and DOS for Test Automation

The command line interface (CLI) is a powerful tool for interacting with your computer. Mastering it can significantly boost your productivity, making it essential for anyone working in test automation. Whether you’re using Linux or DOS, this guide will help you get started with the basics and explore essential commands.

Why Learn the Command Line?

Understanding the command line offers several benefits:

Getting Started with the Command Line

Accessing the Terminal

In Linux, the command line is accessed through a terminal. Open it by searching for “Terminal” in your application menu or using the shortcut Ctrl + Alt + T.

Basic Commands

DOS Command Line

In Windows, access the Command Prompt by searching for “cmd” in the Start menu or pressing Win + R, typing cmd, and hitting Enter.

Basic Commands

Command Line Shortcuts

Linux CLI Shortcuts

DOS CLI Shortcuts

Tips for Mastering the Command Line


Multiple Choice Questions

  1. Which command displays the current directory in Linux?

    • A) cd
    • B) pwd
    • C) ls
    • D) dir

    Correct Answer: B) pwd

  2. What does the dir command do in DOS?

    • A) Lists files and directories in the current directory
    • B) Creates a new directory
    • C) Deletes a file
    • D) Changes the directory

    Correct Answer: A) Lists files and directories in the current directory

  3. Which shortcut clears the screen in the DOS Command Prompt?

    • A) clear
    • B) cls
    • C) Esc
    • D) Tab

    Correct Answer: B) cls

  4. In Linux, which command is used to display the contents of a file?

    • A) type
    • B) cat
    • C) echo
    • D) view

    Correct Answer: B) cat

  5. What does cd .. do on the command line?

    • A) Changes to the home directory
    • B) Creates a new directory
    • C) Moves up one directory level
    • D) Lists all directories

    Correct Answer: C) Moves up one directory level


Mastering the command line is essential for those in test automation, enabling more control over scripts, system configurations, and testing environments. With regular practice, you can boost efficiency and enhance your automation skills.