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In computing, regsvr32 (Register Server) is a command-line utility in Microsoft Windows and ReactOS [1] for registering and unregistering DLLs and ActiveX controls in the operating system Registry. [2]
cmd.exe is the counterpart of COMMAND.COM in DOS and Windows 9x systems, and analogous to the Unix shells used on Unix-like systems. The initial version of cmd.exe for Windows NT was developed by Therese Stowell. [6] Windows CE 2.11 was the first embedded Windows release to support a console and a Windows CE version of cmd.exe. [7]
Support was discontinued with Windows Me. [1] At the time of its initial release, Sysedit was commonly used to demonstrate multiple document interfaces (MDI). [citation needed] It opens all of the aforementioned configuration files at once in separate daughter windows whenever launched. It still uses the System font from older versions of Windows.
The SysWOW64 folder located in the Windows folder on the OS drive contains several applications to support 32-bit applications (e.g. cmd.exe, odbcad32.exe, to register ODBC connections for 32-bit applications). 16-bit legacy applications for MS-DOS and early versions of Windows are usually incompatible with 64-bit versions of Windows Vista, 7 ...
In Windows NT family, the system files are mainly under the folder C:\Windows\System32. In Mac OS they are in the System suitcase. And in Linux system the system files are located under folders /boot (the kernel itself), /usr/sbin (system utilities) and /usr/lib/modules (kernel device drivers
Microsoft released a version of cmd.exe for Windows 9x and ME called WIN95CMD to allow users of older versions of Windows to use certain cmd.exe-style batch files. As of Windows 8, cmd.exe is the normal command interpreter for batch files; the older COMMAND.COM can be run as well in 32-bit versions of Windows able to run 16-bit programs.
The %ComSpec% variable contains the full path to the command processor; on the Windows NT family of operating systems, this is cmd.exe, while on Windows 9x, %COMSPEC% is COMMAND.COM. %OS% The %OS% variable contains a symbolic name of the operating system family to distinguish between differing feature sets in batchjobs .
In older versions of Windows, programs which linked against MSVCRT.DLL were expected to install a compatible copy in the System32 folder, but this contributed to DLL Hell because many installers failed to check the library version against the installed version before replacing it.