Multics includes a rename command to rename a directory entry. The command is available in the operating systems Digital Research CP/M, MP/M, Cromemco CDOS, MetaComCo TRIPOS, DOS, IBM OS/2, Microsoft Windows, ReactOS, SymbOS, and DexOS. A notable exception to this rule is DOSBox, in which ren may be used to move a file, since move is not supported. On versions of MS-DOS that do not support the move command (older than 6.00), the user would simply copy the file to a new destination, and then delete the original file. Alternatively, ] may be used if available. However, unlike mv, ren cannot be used to move files, as a new directory for the destination file may not be used. It can also move a file to a new path, if it is on the same device. It is used to rename computer files and in some implementations (such as AmigaDOS ) also directories. In computing, ren (or rename) is a command in various command-line interpreters ( shells) such as ], ], 4DOS, 4NT and Windows PowerShell. OpenVOS, RT-11, OS/8, RSX-11, ISIS-II, iRMX 86, TOPS-20, Z80-RIO, FLEX, CDOS, OS-9, FlexOS, PC-MOS, 4690 OS, MPE/iX, THEOS/OASIS, OpenVMS, CP/M, MP/M, TRIPOS, AmigaDOS, DOS, MSX-DOS, SISNE plus, OS/2, Windows, ReactOS, SymbOS, DexOS Various open-source and commercial developers