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Top Forums Shell Programming and Scripting Merging two tab separated files via nawk Post 302713173 by divergenciya on Wednesday 10th of October 2012 10:42:36 AM
Old 10-10-2012
Merging two tab separated files via nawk

I searched a lot considering this theme,but still cant make my code working.
I have two tab separated files, I want to do the following thing:

File 1:

Code:
xx1 y yy
xx2 y yy
xx3 y yy
xx4 y yy


File 2:

Code:
xx1 z1
xx2 z2
xx3 z3
xx4 z4
xx5 z5

So I want to merge them ,according to the first column and receive:

File 3:

Code:
xx1 y yy z1
xx2 y yy z2
xx3 y yy z3
xx4 y yy z4


nawk with while and getline doesnt work at all, so I tried to write smth with NR,FNR
Code:
 
NR==FNR{a[$1]=$2;next}
{($1 in a) print $1,$4,a[$3]}' file1 file2

the problem is that after {a[$1]=$0 ; next} it doesnt see this array anymore.So after next and } i can not print it and do anything else with it .

I tried to write code like this:
Code:
awk '
NR==FNR{a[$1]=$2;next}
a[$3]{print $1,$4,a[$3]}' file1 file2

but still experienced same problem
Smilie

Thank you for any help!

Last edited by Corona688; 10-10-2012 at 12:26 PM..
 

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Locale::Language(3perl) 				 Perl Programmers Reference Guide				   Locale::Language(3perl)

NAME
Locale::Language - standard codes for language identification SYNOPSIS
use Locale::Language; $lang = code2language('en'); # $lang gets 'English' $code = language2code('French'); # $code gets 'fr' @codes = all_language_codes(); @names = all_language_names(); DESCRIPTION
The "Locale::Language" module provides access to standard codes used for identifying languages, such as those as defined in ISO 639. Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639 two- letter codes will be used. SUPPORTED CODE SETS
There are several different code sets you can use for identifying languages. The ones currently supported are: alpha-2 This is the set of two-letter (lowercase) codes from ISO 639, such as 'he' for Hebrew. This code set is identified with the symbol "LOCALE_LANG_ALPHA_2". This is the default code set. alpha-3 This is the set of three-letter (lowercase) bibliographic codes from ISO 639, such as 'heb' for Hebrew. This code set is identified with the symbol "LOCALE_LANG_ALPHA_3". term This is the set of three-letter (lowercase) terminologic codes from ISO 639. This code set is identified with the symbol "LOCALE_LANG_TERM". ROUTINES
code2language ( CODE [,CODESET] ) language2code ( NAME [,CODESET] ) language_code2code ( CODE ,CODESET ,CODESET2 ) all_language_codes ( [CODESET] ) all_language_names ( [CODESET] ) Locale::Language::rename_language ( CODE ,NEW_NAME [,CODESET] ) Locale::Language::add_language ( CODE ,NAME [,CODESET] ) Locale::Language::delete_language ( CODE [,CODESET] ) Locale::Language::add_language_alias ( NAME ,NEW_NAME ) Locale::Language::delete_language_alias ( NAME ) Locale::Language::rename_language_code ( CODE ,NEW_CODE [,CODESET] ) Locale::Language::add_language_code_alias ( CODE ,NEW_CODE [,CODESET] ) Locale::Language::delete_language_code_alias ( CODE [,CODESET] ) These routines are all documented in the Locale::Codes man page. SEE ALSO
Locale::Codes Locale::Constants http://www.loc.gov/standards/iso639-2/ Source of the ISO 639 codes. AUTHOR
See Locale::Codes for full author history. Currently maintained by Sullivan Beck (sbeck@cpan.org). COPYRIGHT
Copyright (c) 1997-2001 Canon Research Centre Europe (CRE). Copyright (c) 2001-2010 Neil Bowers Copyright (c) 2010-2011 Sullivan Beck This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2011-09-26 Locale::Language(3perl)
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