Comp (command)

In today's world, Comp (command) is a topic that has gained great relevance and has generated multiple debates and research. Its impact has been felt in various areas, from politics to science, through culture and society in general. There is no doubt that Comp (command) is a phenomenon that has marked a before and after in modern history, causing significant changes and awakening the interest of experts and citizens alike. In this article, we will thoroughly explore the impact of Comp (command) and analyze its influence in different areas, with the aim of better understanding its scope and consequences.

comp
Developer(s)DEC, IBM, Microsoft, Digital Research, Novell, Paul Vojta, ReactOS Contributors
Initial releaseAugust 1981 (1981-08)
Operating systemOS/8, PC DOS, MS-DOS, FlexOS, SISNE plus, OS/2, eComStation, ArcaOS, Windows, DR DOS, FreeDOS, ReactOS
PlatformCross-platform
TypeCommand
LicenseFreeDOS: MIT
ReactOS: GNU GPL 2

In computing, comp is a command used on DEC OS/8,[1] DOS,[2] DR FlexOS,[3] IBM OS/2,[4] Microsoft Windows[5] and related computer operating systems such as ReactOS. It is used to perform comparisons of multiple computer files to show the differences between them.[6]

History

COMP.COM (among other commands) in IBM PC DOS 1.0.

In DOS, the comp command first appeared in PC DOS 1.0[7] and has been included in most versions of MS-DOS and PC DOS. A newer command, fc was added in DOS 3.3 which allows for line comparisons in addition to binary comparisons. DR DOS 6.0 also includes an implementation of the comp command.[8]

The FreeDOS version was developed by Paul Vojta and is licensed under the MIT License.[9] Ged Murphy developed the ReactOS version. It is licensed under the GNU GPL 2.[10]

The command is also available in the EFI shell.[11]

Syntax

The command-syntax is:[12] 

comp

Parameters

  • <Data1> – Location and name of the first file or set of files
  • <Data2> – Location and name of the second file or set of files
  • /d – Display differences in decimal format (Default is hexadecimal)
  • /a – Display differences as characters
  • /l – Display the number of the line, instead of the byte offset
  • /n=<Number> – Compare only the specified number of lines for each file
  • /c – Perform a non case-sensitive comparison
  • /off – Process files with the offline attribute set
  • /? – Display Help

See also

References

  1. ^ "Concise Command Language" (CCL)."OS/8 Handbook" (PDF). April 1974. Retrieved 28 November 2017.
  2. ^ Jamsa, Kris A. (1993), DOS: The Complete Reference, Osborne McGraw-Hill, p. 206, ISBN 0078819040.
  3. ^ http://www.bitsavers.org/pdf/digitalResearch/flexos/1073-2003_FlexOS_Users_Guide_V1.3_Nov86.pdf Archived 2019-09-25 at the Wayback Machine [bare URL PDF]
  4. ^ "OS/2 Commands". www.jatomes.com. Archived from the original on 2019-04-14. Retrieved 2019-07-20.
  5. ^ "Comp".
  6. ^ Wolverton, Van (2003). Running MS-DOS Version 6.22 (20th Anniversary Edition), 6th Revised edition. Microsoft Press. ISBN 0-7356-1812-7.
  7. ^ http://www.bitsavers.org/pdf/ibm/pc/dos/6172220_DOS_1.0_Jan82.pdf [bare URL PDF]
  8. ^ "DR DOS 6.0 User Guide Optimisation and Configuration Tips" (PDF). Archived from the original (PDF) on 2019-09-30. Retrieved 2019-08-13.
  9. ^ "FreeDOS 1.2 Updates Package - comp (FreeDOS Base)". Ibiblio.org. 2006-10-21. Retrieved 2022-09-04.
  10. ^ "Reactos/Reactos". GitHub. 3 January 2022.
  11. ^ "EFI Shells and Scripting". Intel. Retrieved 2013-09-25.
  12. ^ MS-DOS and Windows command line comp command

Further reading

Wikibooks has a book on the topic of: Guide to Windows Commands


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