What is the function of the command 'rm [file name]'?

The command 'rm [file name]' is specifically designed to remove files or directories in a Linux environment. When executed, it deletes the specified file from the filesystem, making it no longer accessible. This command is often used for managing files that are no longer needed and it operates by directly removing the reference to the file in the filesystem without moving it to a trash or recycle bin, which distinguishes it from commands that typically involve renaming or creating files.

For directories, the 'rm' command can remove them as well, but it requires additional options, such as '-r' (recursive), to delete directories along with their contents. This robust functionality highlights 'rm' as a powerful tool for file management, emphasizing the need for careful use to avoid unintentional data loss.

The other options represent different command functions: changing users, renaming files or folders, and creating directories, none of which accurately describe the purpose and outcome of using the 'rm' command. Therefore, understanding that 'rm [file name]' translates explicitly to the removal of files or directories underlines the significance of choosing the correct command for file management tasks in Linux.