Ren (command)

ren / rename

The ReactOS ren command
Developer(s)	Various open-source and commercial developers
Operating system	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
Platform	Cross-platform
Type	Command

In computing, ren (or rename) is a command in various command-line interpreters (shells) such as COMMAND.COM, cmd.exe, 4DOS, 4NT and Windows PowerShell. It is used to rename computer files and in some implementations (such as AmigaDOS^[1]) also directories. It is analogous to the Unix mv command. However, unlike mv, ren cannot be used to move files, as a new directory for the destination file may not be used. Alternatively, move may be used if available. 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. A notable exception to this rule is DOSBox, in which ren may be used to move a file, since move is not supported.

Implementations

Description of the RENAME command of RT-11SJ displayed on a VT100.

The command is available in the operating systems Digital Research CP/M,^[2] MP/M,^[3][4] Cromemco CDOS,^[5] MetaComCo TRIPOS,^[6] DOS, IBM OS/2,^[7] Microsoft Windows,^[8] ReactOS,^[9] SymbOS, and DexOS.

Multics includes a rename command to rename a directory entry. It can be contracted to rn.^[10]

Stratus OpenVOS,^[11] DEC RT-11,^[12] OS/8,^[13] RSX-11,^[14] Intel ISIS-II,^[15] iRMX 86,^[16] TOPS-20,^[17] Zilog Z80-RIO,^[18] TSC FLEX,^[19] Microware OS-9,^[20] DR FlexOS,^[21] IBM/Toshiba 4690 OS,^[22] HP MPE/iX,^[23] THEOS/OASIS,^[24] and OpenVMS^[25] also provide the rename command which in some cases can be contracted to ren.

The rename command is supported by Tim Paterson's SCP 86-DOS.^[26] On MS-DOS, the command is available in versions 1 and later.^[27] DR DOS 6.0 also includes an implementation of the ren and rename commands.^[28]

In Windows PowerShell, ren is a predefined command alias for the Rename-Item Cmdlet which basically serves the same purpose.^[29]

TSL PC-MOS includes an implementation of rename.^[30] Like the rest of the operating system, it is licensed under the GPL v3.^[31]

It is also available in the open source MS-DOS emulator DOSBox.

Example

>ren filename newname
>ren *.htm *.html

Another example. This will rename a default video found in Windows 7 with a new name:

>rename "C:\Users\Public\Videos\Sample Videos\Wildlife.wmv" "Wildlife2.wmv"

The first parameter may contain a drive and a path, but the second parameter must contain only the new filename.

To remove certain characters of a file name in Microsoft Windows command prompt (XP & Higher) :

>rename "abcd*.txt" "////*.txt"

This will remove abcd from the file name.

Notes:

1. Same number of / as the number of initial characters to remove.
2. Double quotes for both arguments.
3. It doesn't remove . from file name

See also

• List of DOS commands
• List of PowerShell commands

References

1. Rügheimer, Hannes; Spanik, Christian (September 19, 1988). AmigaDOS quick reference. Grand Rapids, Mi : Abacus. ISBN 9781557550491 – via Internet Archive.
2. "Manual" (PDF). www.cpm.z80.de. Retrieved 2020-09-19.
3. Digital Research (July 1981) [1979]. MP/M - Multi-Programming Monitor Control Program - User's Guide (PDF) (4 ed.). Pacific Grove, CA, USA: Digital Research. Archived (PDF) from the original on 2017-01-04. Retrieved 2017-01-04.
4. Digital Research (1981-09-25). MP/M-86 Operating System - User's Guide (PDF) (1 ed.). Pacific Grove, CA, USA: Digital Research. Archived (PDF) from the original on 2017-01-04. Retrieved 2017-01-04.
5. CDOS USER'S MANUAL
6. "Manual" (PDF). www.pagetable.com. Retrieved 2020-09-19.
7. "JaTomes Help - OS/2 Commands". Archived from the original on 2019-04-14. Retrieved 2019-07-06.
8. "Microsoft TechNet Rename (ren) article". 11 September 2009.
9. "reactos/reactos". GitHub. 3 January 2022.
10. "Multics Commands". www.multicians.org.
11. "Manual" (PDF). stratadoc.stratus.com. Retrieved 2020-09-19.
12. "RT-11 HELP FILE". paleoferrosaurus.com. Archived from the original on 2018-07-17. Retrieved 2018-07-16.
13. "Concise Command Language" (CCL)."OS/8 Handbook" (PDF). April 1974. Retrieved 28 November 2017.
14. John F. Pieper (1987). RSX A Guide for Users (PDF). Digital Equipment Corporation. ISBN 0-932376-90-8. Retrieved 2020-09-19.
15. ISIS II Users Guide
16. iRMX™86 INTRODUCTION AND OPERATOR'S REFERENCE MANUAL For Release 6
17. "TOPS-20 Command manual" (PDF). Archived from the original (PDF) on 2020-08-09. Retrieved 2018-07-18.
18. Z80-RIO OPERATING SYSTEM USER'S MANUAL
19. "FLEX 2.0 User's Manual" (PDF).
20. Paul S. Dayan (1992). The OS-9 Guru - 1 : The Facts. Galactic Industrial Limited. ISBN 0-9519228-0-7.
21. "FlexOS User's Guide" (PDF). www.bitsavers.org. 1986. Archived from the original (PDF) on 2010-08-08. Retrieved 2020-09-19.
22. "Users guide" (PDF). archive.org. Retrieved 2020-09-19.
23. "MPE/iX Command Reference Manual" (PDF). Archived from the original (PDF) on 2018-10-21. Retrieved 2018-10-21.
24. THEOS/OASIS User's Handbook
25. OpenVMS User's Manual^{[permanent dead link]}
26. 86-DOS - Disk Operating System for the 8086 - User's Manual (PDF). Version 0.3 (Preliminary ed.). Seattle, Washington, USA: Seattle Computer Products, Inc. 1980. Archived from the original (PDF) on 2019-07-14. Retrieved 2019-07-14. (59 pages)
27. Wolverton, Van (2003). Running MS-DOS Version 6.22 (20th Anniversary Edition), 6th Revised edition. Microsoft Press. ISBN 0-7356-1812-7.
28. DR DOS 6.0 User Guide Optimisation and Configuration Tips
29. "Microsoft TechNet PowerShell Rename-Item (ren) article". 22 October 2009.
30. PC-MOS User Guide
31. Jansen, Roeland (8 February 2018). "pcmos386v501: PC-MOS/386 v5.01 final release including cdrom driver sources" – via GitHub.

Further reading

• Wolverton, Van (1990). MS-DOS Commands: Microsoft Quick Reference, 4th Revised edition. Microsoft Press. ISBN 978-1556152894.
• Kathy Ivens; Brian Proffit (1993). OS/2 Inside & Out. Osborne McGraw-Hill. ISBN 978-0078818714.
• Frisch, Æleen (2001). Windows 2000 Commands Pocket Reference. O'Reilly. ISBN 978-0-596-00148-3.

External links

• ren | Microsoft Docs