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Full Discussion: Minus of 2 files -- Please help
Top Forums Shell Programming and Scripting Minus of 2 files -- Please help Post 302087245 by jim mcnamara on Wednesday 30th of August 2006 03:00:56 PM
Old 08-30-2006
Code:
awk '
      FILENAME=="file1" { arr[$0]++}
      FILENAME=="file2" { if (arr[$0]==0) {print $0} }
      ' file1 file2 > file2minusfile1.txt

will give file2 minus file1, i.e., data in file2 that does not match anything in file1
Last edited by jim mcnamara; 09-01-2006 at 03:53 PM..
This User Gave Thanks to jim mcnamara For This Post:
tinufarid
 

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LEARN ABOUT SUSE

lzdiff

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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