comp (command)
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| comp | |
|---|---|
| File:ReactOS-0.4.13 comp command 667x482.png The ReactOS comp command | |
| Developers | DEC, IBM, Microsoft, Digital Research, Novell, Paul Vojta, ReactOS Contributors |
| Initial release | August 1981 |
| Repository |
|
| Engine | |
| Operating system | OS/8, PC DOS, MS-DOS, FlexOS, SISNE plus, OS/2, eComStation, ArcaOS, Windows, DR DOS, FreeDOS, ReactOS |
| Platform | Cross-platform |
| Type | Command |
| License | FreeDOS: 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
[edit | edit source]
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
[edit | edit source]comp [<Data1>] [<Data2>] [/d] [/a] [/l] [/n=<Number>] [/c]
Parameters
[edit | edit source]<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[line]– Process files with the offline attribute set/?– Display Help
See also
[edit | edit source]References
[edit | edit source]- ^ "Concise Command Language" (CCL).Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ 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]
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ http://www.bitsavers.org/pdf/ibm/pc/dos/6172220_DOS_1.0_Jan82.pdf [bare URL PDF]
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ MS-DOS and Windows command line comp command
Further reading
[edit | edit source]- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]
Wikibooks has a book on the topic of: Guide to Windows Commands
