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Full Discussion: Compare two text files and Only show the differences
Top Forums Shell Programming and Scripting Compare two text files and Only show the differences Post 302373292 by skmdu on Friday 20th of November 2009 01:57:33 AM
Old 11-20-2009
If you want the current error to be in the top of the file,

You should try something like this.. This could be one of the crude ways to do..
Code:
$ cp Error.txt Error.txt.tmp
$ sdiff a b  | grep '<' >  a ## a is some temporary file.
$ cat a Error.txt.tmp > Error.txt

 

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LEARN ABOUT DEBIAN

mincdiff

MINCDIFF(1)							 MINC User's Guide						       MINCDIFF(1)

NAME

       mincdiff - report differences between minc files

SYNOPSIS

       mincdiff [-header|-body] [-l] [diff options] file1 file2

DESCRIPTION

       The  mincdiff  shell  script compares two minc files by running diff(1) on the headers of the two minc files, and cmp(1) on the image vari-
       able.  You can view only the header differences using -header or only the body (image variable) differences using -body.  The option -l	is
       passed on to cmp of the image variable.	Any unrecognized options (e.g. -u) are passed verbatim to the diff of the headers.

OPTIONS

       -header Compare only the headers of the two files.

       -body Compare only the image data of the two files.

       -l Print the byte offset in decimal and the byte value in octal
	      for each difference encountered in the image variable.

AUTHOR

       Peter Neelin

COPYRIGHTS

       Copyright (C) 1993 by Peter Neelin

SEE ALSO

       diff(1), cmp(1).

							   $Date: 2004-05-20 21:52:08 $ 					       MINCDIFF(1)
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