Short for Microsoft Disk operating system, MS-DOS is a non-graphical command line operating system created for IBM compatible computers that was first introduced by Microsoft in August 1981 and was last updated in 1994 when MS-DOS 6.22 was released. Although the MS-DOS operating system is not commonly used today, the command shell more commonly known as the Windows command line is still used and recommended.
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| COMMAND | Short Detail |
| ASSOC | Displays or modifies file extension associations. |
| AT | Schedules commands and programs to run on a computer. |
| ATTRIB | Displays or changes file attributes. |
| BREAK | Sets or clears extended CTRL+C checking. |
| BCDEDIT | Sets properties in boot database to control boot loading. |
| CACLS | Displays or modifies access control lists (ACLs) of files. |
| CALL | Calls one batch program from another. |
| CD | Displays the name of or changes the current directory. |
