The article provides a comprehensive guide on executing JUnit tests from the command line, highlighting its utility in quickly verifying test outcomes without opening an IDE. JUnit, a popular Java-based framework, can be integrated with Selenium WebDriver for structured web application testing. The tutorial covers running JUnit tests using various build automation tools like Apache Maven, Gradle, and ANT, and demonstrates the setup process, including downloading necessary jar files and configuring classpaths. It also explains how to compile and run test files, execute specific tests, and utilize continuous integration tools like Jenkins. The use of JUnitCore class for running tests is detailed, and the article emphasizes the flexibility of command-line testing, especially when integrated with cloud-based platforms like LambdaTest for Selenium Grid testing.