RenThe ren command is the shorthand version of the rename command.
RenameThe rename command is used to change the name of the individual file that you specify.
ReplaceThe replace command is used to replace one or more files with one or more other files.
The restore command is used to restore files that were backed up using the backup command.
The backup command was only available up to MS-DOS 5.00 but the restore command was included by default with later versions of MS-DOS to provide a way to restore files that were backed up in previous versions of MS-DOS.