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Full Discussion: Compare three files based on two fields
Top Forums Shell Programming and Scripting Compare three files based on two fields Post 302748873 by Scrutinizer on Thursday 27th of December 2012 04:20:03 AM
Old 12-27-2012
pamu's suggestion could be shortened a bit further without a function:
Code:
awk -F\| '
{
  i=$1 FS $2
  A[i]++
  B[i]=(B[i]?B[i]",":i FS) FILENAME
}
END{
  for (i in A) if(A[i]<3) print B[i] FS
}' file*

But this would not count the occurrence of entries that occur multiple times in one file but not in other files. To counteract that, one could do something like this:

Code:
awk -F\| '
{
  i=$1 FS $2
}
!D[i,FILENAME]++{
  A[i]++
  B[i]=(B[i]?B[i]",":i FS) FILENAME
}
END{
  for (i in A) if(A[i]<3) print B[i] FS
}' file*

Last edited by Scrutinizer; 12-27-2012 at 05:30 AM..
 

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LEARN ABOUT SUSE

lookbib

LOOKBIB(1)						      General Commands Manual							LOOKBIB(1)

NAME

       lookbib - search bibliographic databases

SYNOPSIS

       lookbib [ -v ] [ -istring ] [ -tn ] filename...

       It is possible to have whitespace between a command line option and its parameter.

DESCRIPTION

       lookbib	prints a prompt on the standard error (unless the standard input is not a terminal), reads from the standard input a line contain-
       ing a set of keywords, searches the bibliographic databases filename...	for references containing those keywords,  prints  any	references
       found  on  the  standard  output,  and repeats this process until the end of input.  For each database filename to be searched, if an index
       filename.i created by indxbib(1) exists, then it will be searched instead; each index can cover multiple databases.

OPTIONS

       -v     Print the version number.

       -istring
	      When searching files for which no index exists, ignore the contents of fields whose names are in string.

       -tn    Only require the first n characters of keys to be given.	Initially n is 6.

FILES

       filename.i  Index files.

SEE ALSO

       refer(1), lkbib(1), indxbib(1)

Groff Version 1.18.1						   27 June 2001 							LOOKBIB(1)
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