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Top Forums Shell Programming and Scripting NR==FNR trick for joining columns from two files Post 302563789 by ctsgnb on Wednesday 12th of October 2011 07:15:38 AM
Old 10-12-2011
Sorry but few adding question :

Which foo entry does NOT need to be displayed :

1. Any foo entry that has his rs# NOT in bar ?
2. Any foo entry that has his [0-9]# NOT in bar ?
3. Any foo entry that has his rs# OR his [0-9]# NOT in bar ?
4. Any foo entry that has his rs# AND his [0-9]# NOT in bar ?

Thanks in advance

If you want the case number 4. here you go :
Code:
nawk 'NR==FNR{i=$1$2;sub($1,z);a[i]=$0;next}(($2$4) in a){print $0 a[$2$4]}' bar.txt foo.txt


Last edited by ctsgnb; 10-12-2011 at 08:35 AM..
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Text::Glob(3)						User Contributed Perl Documentation					     Text::Glob(3)

NAME
Text::Glob - match globbing patterns against text SYNOPSIS
use Text::Glob qw( match_glob glob_to_regex ); print "matched " if match_glob( "foo.*", "foo.bar" ); # prints foo.bar and foo.baz my $regex = glob_to_regex( "foo.*" ); for ( qw( foo.bar foo.baz foo bar ) ) { print "matched: $_ " if /$regex/; } DESCRIPTION
Text::Glob implements glob(3) style matching that can be used to match against text, rather than fetching names from a filesystem. If you want to do full file globbing use the File::Glob module instead. Routines match_glob( $glob, @things_to_test ) Returns the list of things which match the glob from the source list. glob_to_regex( $glob ) Returns a compiled regex which is the equivalent of the globbing pattern. glob_to_regex_string( $glob ) Returns a regex string which is the equivalent of the globbing pattern. SYNTAX
The following metacharacters and rules are respected. "*" - match zero or more characters "a*" matches "a", "aa", "aaaa" and many many more. "?" - match exactly one character "a?" matches "aa", but not "a", or "aaa" Character sets/ranges "example.[ch]" matches "example.c" and "example.h" "demo.[a-c]" matches "demo.a", "demo.b", and "demo.c" alternation "example.{foo,bar,baz}" matches "example.foo", "example.bar", and "example.baz" leading . must be explictly matched "*.foo" does not match ".bar.foo". For this you must either specify the leading . in the glob pattern (".*.foo"), or set $Text::Glob::strict_leading_dot to a false value while compiling the regex. "*" and "?" do not match / "*.foo" does not match "bar/baz.foo". For this you must either explicitly match the / in the glob ("*/*.foo"), or set $Text::Glob::strict_wildcard_slash to a false value with compiling the regex. BUGS
The code uses qr// to produce compiled regexes, therefore this module requires perl version 5.005_03 or newer. AUTHOR
Richard Clamp <richardc@unixbeard.net> COPYRIGHT
Copyright (C) 2002, 2003, 2006, 2007 Richard Clamp. All Rights Reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
File::Glob, glob(3) perl v5.18.2 2017-10-06 Text::Glob(3)
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