GIAC Foundational Cybersecurity Technologies Practice Test

Which command allows a user to list the contents of a directory in Linux?

1. ls

2. dir

3. cat

4. pwd

The correct answer is: ls

In Linux, the command that allows a user to list the contents of a directory is "ls." This command stands for "list" and is the standard way to display the files and directories within the current working directory or a specified directory. By default, it provides a simple view of the files, but it can also be modified with various options to show additional details such as file permissions, sizes, and modification times. The other commands serve different purposes in the context of Linux file management. "dir" is a command that is more commonly associated with DOS and Windows environments, though it can be used in some Linux distributions as well; however, "ls" is the preferred and more powerful tool for listing files on Linux systems. "cat" is used for concatenating and displaying the contents of files, not for listing directories, while "pwd" prints the current working directory path, rather than listing its contents. Hence, "ls" is the accurate and widely used command for this purpose in Linux environments.