Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Merge multiple files with common header
Top Forums Shell Programming and Scripting Merge multiple files with common header Post 302918920 by Akshay Hegde on Friday 26th of September 2014 06:52:13 AM
Old 09-26-2014
Code:
awk 1 x[1-4] >output

Code:
cat x[1-4] >output


Header will be reapeted if you use above command, in case if you want to write header only once while merging files try this

Code:
awk 'NR == 1 || FNR > 1'  x[1-4] >output

Last edited by Akshay Hegde; 09-26-2014 at 07:59 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Merge text files while combining the multiple header/trailer records into one each.

Situation: Our system currently executes a job (COBOL Program) that generates an interface file to be sent to one of our vendors. Because this system processes information for over 100,000 employees/retirees (and growing), we'd like to multi-thread the job into processing-groups in order to... (4 Replies)
Discussion started by: oordonez
4 Replies

2. Shell Programming and Scripting

Merge files of differrent size with one field common in both files using awk

hi, i am facing a problem in merging two files using awk, the problem is as stated below, file1: A|B|C|D|E|F|G|H|I|1 M|N|O|P|Q|R|S|T|U|2 AA|BB|CC|DD|EE|FF|GG|HH|II|1 .... .... .... file2 : 1|Mn|op|qr (2 Replies)
Discussion started by: shashi1982
2 Replies

3. Shell Programming and Scripting

merge two text files of different size on common index

I have two text files. text file 1: ID filePath col1 col2 col3 1 10584588.mol 269.126 190.958 23.237 2 10584549.mol 281.001 200.889 27.7414 3 10584511.mol 408.824 158.316 29.8561 4 10584499.mol 245.632 153.241 25.2815 5 10584459.mol ... (8 Replies)
Discussion started by: LMHmedchem
8 Replies

4. UNIX for Dummies Questions & Answers

Merge Files into Single with Header

Hi All, I am trying to merge all files in a directory that end in *.txt to a single file with the contents one after the other. This I can do using the cat function but how do I put the name of the file as a header for each one in the combined single file and seperate the contents from each... (2 Replies)
Discussion started by: pcg
2 Replies

5. UNIX for Dummies Questions & Answers

Writing a loop to merge multiple files by common column

I have 100 data files labelled 250.1.txt through 250.100.txt. The second column of the data files partially match (there is about %90 overlap). Each data file has 4 columns. I want the merge all these text files by the matching values in the second column. In the output, the first column should... (1 Reply)
Discussion started by: evelibertine
1 Replies

6. UNIX for Dummies Questions & Answers

Merge all csv files in one folder considering only 1 header row and ignoring header of all others

Friends, I need help with the following in UNIX. Merge all csv files in one folder considering only 1 header row and ignoring header of all other files. FYI - All files are in same format and contains same headers. Thank you (4 Replies)
Discussion started by: Shiny_Roy
4 Replies

7. UNIX for Dummies Questions & Answers

Merge two files with common IDs but unequal number of rows

Hi, I have two files that I would like to merge and think that there should be a solution using awk. The files look something like this: file 1 IDX1 IDY1 IDX2 IDY2 IDX3 IDY3 file 2 IDY1 dataA data1 IDY2 dataB data2 IDY3 dataC data3 Desired output IDX1 IDY1 dataA data1 IDX2 ... (5 Replies)
Discussion started by: katie8856
5 Replies

8. Shell Programming and Scripting

Merge multiple lines in same file with common key using awk

I've been a Unix admin for nearly 30 years and never learned AWK. I've seen several similar posts here, but haven't been able to adapt the answers to my situation. AWK is so damn cryptic! ;) I have a single file with ~900 lines (CSV list). Each line starts with an ID, but with different stuff... (6 Replies)
Discussion started by: protosd
6 Replies

9. Shell Programming and Scripting

Merge files based on both common and uncommon rows

Hi, I have two files A (2190 rows) and file B (1100 rows). I want to merge the contents of two files based on common field, also I need the unmatched rows from file A file A: ABC XYZ PQR file B: >LMN|chr1:11000-12456: >ABC|chr15:176578-187678: >PQR|chr3:14567-15866: output... (3 Replies)
Discussion started by: Diya123
3 Replies

10. UNIX for Dummies Questions & Answers

Merge selective columns from files based on common key

Hi, I am trying to selectively merge two files based on keys reported in the 1st column. File1: #file1-header1 file1-header2 111 qwe rtz uio 198 asd fgh jkl 165 yxc 789 poi uzt rew 89 lkj File2: #file2-header2 file2-header2 165 ghz nko2 ... (2 Replies)
Discussion started by: dovah
2 Replies

LEARN ABOUT OSX

locale::codes::langext

Locale::Codes::LangExt(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangExt(3pm)

NAME

       Locale::Codes::LangExt - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangExt;

	  $lext = code2langext('acm');		       # $lext gets 'Mesopotamian Arabic'
	  $code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langext_codes();
	  @names   = all_langext_names();

DESCRIPTION

       The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language extensions. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langext('acm','alpha');
	  $lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.

	   This is the default code set.

ROUTINES

       code2langext ( CODE [,CODESET] )
       langext2code ( NAME [,CODESET] )
       langext_code2code ( CODE ,CODESET ,CODESET2 )
       all_langext_codes ( [CODESET] )
       all_langext_names ( [CODESET] )
       Locale::Codes::LangExt::rename_langext  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangExt::add_langext  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangExt::delete_langext  ( CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangExt::delete_langext_alias  ( NAME )
       Locale::Codes::LangExt::rename_langext_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::delete_langext_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2012 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.2							    2012-10-11					       Locale::Codes::LangExt(3pm)
All times are GMT -4. The time now is 06:03 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy