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Comp (command)
Command From Wikipedia, the free encyclopedia
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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]
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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]
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Syntax
comp [<Data1>] [<Data2>] [/d] [/a] [/l] [/n=<Number>] [/c]
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[line]– Process files with the offline attribute set/?– Display Help
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