How can you remove or delete a file in Linux?

To remove or delete a file in Linux, the command used is rm. This command stands for "remove" and directly interacts with the file system to delete specified files. When executed, it will permanently delete the files without sending them to a trash or recycle bin, so caution is advised when using it.

Other commands mentioned serve different purposes: mv is used for moving or renaming files, cp is employed for copying files, and ls is used to list directory contents. Each of these commands is essential in file management on a Linux system, but none of them can accomplish the task of file deletion as effectively as rm. Therefore, rm is the correct choice for removing files.