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Full Discussion: Help with file sizes
Top Forums Shell Programming and Scripting Help with file sizes Post 302376513 by dsravan on Tuesday 1st of December 2009 02:22:18 PM
Old 12-01-2009
Help with file sizes

I have 2 big files in the size of gb. They are same with respect to content, both are “,” delimited. Now both of them are created by two different processes but has the same logic. The problem is they are differing only in few bytes for e.g one file is 202195751 bytes other is 202195773. So there is only 22 bytes difference. But we need to make sure file sizes and contents match exactly. I tried using diff with -iab arguments but couldn't get exactly on which line or where is the difference. Is there a way to find out the lines exactly where they differ. I used the diff after sorting both the files. But no luck
 

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bdiff(1)							   User Commands							  bdiff(1)

NAME
bdiff - big diff SYNOPSIS
bdiff filename1 filename2 [n] [-s] DESCRIPTION
bdiff is used in a manner analogous to diff to find which lines in filename1 and filename2 must be changed to bring the files into agree- ment. Its purpose is to allow processing of files too large for diff. If filename1 (filename2) is -, the standard input is read. bdiff ignores lines common to the beginning of both files, splits the remainder of each file into n-line segments, and invokes diff on cor- responding segments. If both optional arguments are specified, they must appear in the order indicated above. The output of bdiff is exactly that of diff, with line numbers adjusted to account for the segmenting of the files (that is, to make it look as if the files had been processed whole). Note: Because of the segmenting of the files, bdiff does not necessarily find a smallest sufficient set of file differences. OPTIONS
n The number of line segments. The value of n is 3500 by default. If the optional third argument is given and it is numeric, it is used as the value for n. This is useful in those cases in which 3500-line segments are too large for diff, causing it to fail. -s Specifies that no diagnostics are to be printed by bdiff (silent option). Note: However, this does not suppress possible diagnos- tic messages from diff, which bdiff calls. USAGE
See largefile(5) for the description of the behavior of bdiff when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). FILES
/tmp/bd????? ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ SEE ALSO
diff(1), attributes(5), largefile(5) DIAGNOSTICS
Use help for explanations. SunOS 5.10 14 Sep 1992 bdiff(1)
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