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Command Prompt, also known as cmd.exe or cmd, is the default command-line interpreter for the OS/2, [1] eComStation, ArcaOS, Microsoft Windows (Windows NT family and Windows CE family), and ReactOS [2] operating systems. On Windows CE .NET 4.2, [3] Windows CE 5.0 [4] and Windows Embedded CE 6.0 [5] it is referred to as the Command Processor ...
The runas command was introduced with the Windows 2000 operating system. [2] Any application can use this API to create a process with alternate credentials, for example, Windows Explorer in Windows 7 allows an application to be started under a different account if the shift key is held while right clicking its icon. The program has the ability ...
cmd.exe in Windows NT 2000, 4DOS, 4OS2, 4NT, and a number of third-party solutions allow direct entry of environment variables from the command prompt. From at least Windows 2000, the set command allows for the evaluation of strings into variables, thus providing inter alia a means of performing integer arithmetic.
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The command string typically needs to be wrapped in double quotes. See below for the syntax within the command string. The default command is CMD /C ECHO @FILE , which causes the name of each matching file to be output (displayed).
The command is also available in the Command Processor Shell of Windows Embedded CE [6] and in the Take Command Console. [7] Although the OS/2 command shell is closely related to the Windows Command Prompt, the title command is not available in the OS/2 version of cmd.exe. The default title of the OS/2 shell window is "OS/2 Window".
The command was included as a terminate-and-stay-resident program with MS-DOS and PC DOS versions 5 and later, [4] then Windows 9x, [5] and finally Windows 2000 [6] and later.. In early 1989, functionality similar to DOSKEY was introduced with DR-DOS 3.40 with its HISTORY CONFIG.SYS directive.
In MS-DOS, a batch file can be started from the command-line interface by typing its name, followed by any required parameters and pressing the ↵ Enter key. When DOS loads, the file AUTOEXEC.BAT, when present, is automatically executed, so any commands that need to be run to set up the DOS environment may be placed in this file.