Help needed for diff to ignore a line with certain pattern Post: 302560861

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Top Forums Shell Programming and Scripting Help needed for diff to ignore a line with certain pattern Post 302560861 by durden_tyler on Saturday 1st of October 2011 10:35:41 PM

10-01-2011

Registered User

It works fine in my GNU diff in Cygwin:

Code:

$
$
$ cat file1
Abcd
test1
test2
test3
$
$ cat file2
Abcfdfd
test1
test2
test4
$
$
$ diff -ty -B file1 file2
Abcd                                                            |  Abcfdfd
test1                                                              test1
test2                                                              test2
test3                                                           |  test4
$
$
$ diff -ty -B -I "^Abc" file1 file2
Abcd                                                               Abcfdfd
test1                                                              test1
test2                                                              test2
test3                                                           |  test4
$
$ diff --version
diff (GNU diffutils) 2.9
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Paul Eggert, Mike Haertel, David Hayes,
Richard Stallman, and Len Tower.
$
$

Maybe your diff or system is different?

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lzcmp

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and  xdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options specified are passed
       directly to cmp or diff.  If only one file is specified, then the files compared are file1 (which must have a suffix of	a  supported  com-
       pression  format)  and  file1 from which the compression format suffix has been stripped.  If two files are specified, then they are uncom-
       pressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp or diff is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2009-07-05								 XZDIFF(1)

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