For the most part MS-DOS, the Windows command line, and most of the commands are not case-sensitive. Unlike case-sensitive command line operating systems, like Linux, commands such as the MS-DOS dir command can be typed as DIR, Dir, or dir. In a case-sensitive operating systems, only the lowercase command would work.

There are some commands with additional options (switches) that are case-sensitive. If these options or switches are case-sensitive, it will be mentioned on the Computer Hope MS-DOS commands page.

  • See the case-sensitive, uppercase, and lowercase definitions for further information about each term.
  • MS-DOS and Windows command line help and support.