Comments on: Idiomatic awk http://backreference.org/2010/02/10/idiomatic-awk/ Capture and remember Fri, 03 Feb 2012 08:42:14 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: waldner http://backreference.org/2010/02/10/idiomatic-awk/comment-page-1/#comment-24651 waldner Mon, 13 Jun 2011 16:10:25 +0000 http://backreference.org/?p=825#comment-24651 I assume you want to print the lines that appear in all five files (or N files, for that matter). This should do it, assuming no file is empty (a bit reformatted for readability, but can be written all on a single line): <pre>awk 'BEGIN{ for(i = 1; i<ARGC; i++){ ref = ref s i s = "." } } FNR == 1 {count++} {a[$0] = a[$0] sep[$0] count; sep[$0] = "."} a[$0] == ref' file1 file2 file3 ... fileN</pre> I assume you want to print the lines that appear in all five files (or N files, for that matter). This should do it, assuming no file is empty (a bit reformatted for readability, but can be written all on a single line):

awk 'BEGIN{
  for(i = 1; i<ARGC; i++){
    ref = ref s i
    s = "."
  }
}
FNR == 1 {count++}
{a[$0] = a[$0] sep[$0] count; sep[$0] = "."}
a[$0] == ref' file1 file2 file3 ... fileN
]]> By: Murpholinox Peligro http://backreference.org/2010/02/10/idiomatic-awk/comment-page-1/#comment-24649 Murpholinox Peligro Sun, 12 Jun 2011 22:30:39 +0000 http://backreference.org/?p=825#comment-24649 there is a way to do this but with five files, instead of two? # prints lines that are both in file1.txt and file2.txt (intersection) $ awk 'NR == FNR{a[$0];next} $0 in a' file1.txt file2.txt there is a way to do this but with five files, instead of two?

# prints lines that are both in file1.txt and file2.txt (intersection)
$ awk 'NR == FNR{a[$0];next} $0 in a' file1.txt file2.txt

]]> By: Idiomatic awk « El blog de Fer http://backreference.org/2010/02/10/idiomatic-awk/comment-page-1/#comment-7029 Idiomatic awk « El blog de Fer Tue, 30 Nov 2010 13:55:20 +0000 http://backreference.org/?p=825#comment-7029 [...] http://backreference.org/2010/02/10/idiomatic-awk/ [...] [...] http://backreference.org/2010/02/10/idiomatic-awk/ [...]

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