What does the 'mv' command do in Linux?

The 'mv' command in Linux serves the dual purpose of moving and renaming files and directories. When using 'mv', you can specify the source file or directory that you want to move or rename and the destination, which can be a new location or a new name within the same location.

If you're using 'mv' to rename a file, you simply indicate the existing file name followed by the new desired name. For instance, if you have a file named 'file1.txt' and you want to rename it to 'file2.txt', you would use the command 'mv file1.txt file2.txt'.

When it comes to moving files, you can use 'mv' to relocate a file from its current directory to another directory. For example, the command 'mv file1.txt /home/user/Documents/' would move 'file1.txt' from its current location to the specified Documents directory.

This versatility makes 'mv' a crucial command for file management within the Linux environment. The other options refer to different commands and functionalities that do not involve the moving or renaming of files, thereby establishing 'mv' as the correct choice for the given functionality.