Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Extracting lines by using awk
Top Forums Shell Programming and Scripting Extracting lines by using awk Post 302434593 by drl on Saturday 3rd of July 2010 04:29:30 PM
Old 07-03-2010
Hi, rpf.

I'll let bartus11 explain his code.

I think you were close on your tries.

A very simple code:
Code:
awk '
/^person/ { i++ ; out = "person_" i txt"  }
          { print > out }
' file

this simply looks for string person and increases the counter of which the output file name will be made. It doesn't care about the string inside the ( ... ).

Another code that will extract that string and use it as part of the filename:
Code:
awk '
/^person/ { line = $0; sub(/^.*[(]/, "" ); sub(/[)].*$/, "")
            out = "person_" $0 txtxt" ; print line > out ; next
          }
          { print > out }
' file

This deletes the strings before and after the string inside the parentheses so that
Code:
person (something) xxx

will become just something, which will become part of the output filename.

I hope you will continue to learn about awk, it is a very useful tool.

However, if another command already exists to perform a task, then it is reinventing the wheel to write something specific in awk (or perl or c or ... )

Best wishes ... cheers, drl
Last edited by drl; 07-03-2010 at 05:37 PM..
This User Gave Thanks to drl For This Post:
rpf
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

extracting lines from a file

Hi all, I need to extract some lines from a file based on a condition. For ex: My file will contain 50 lines and i need to extract line which has "File" in it and then the line which has "date" in it. Which command will be the most efficient way to do it. I have tried two ways 1.... (1 Reply)
Discussion started by: pradeepthanraj
1 Replies

2. UNIX for Dummies Questions & Answers

extracting lines from a file

i want to extract lines 5 and 7 from a txt file which contains nearly 20 entries how to do it also i want to check whether the 42nd character is 'S' in that line suggestions welcome (4 Replies)
Discussion started by: trichyselva
4 Replies

3. UNIX for Dummies Questions & Answers

Extracting lines and saving - awk

Hi All, I am trying to extract lines bsed on pattern matching../mp straight-flow/ Extracted output should be saved in meta_string , but the code is not working in that manner,saving repeated lines. can anyone please suggest where am i going wrong. /mp straight-flow/ {... (6 Replies)
Discussion started by: madhaviece
6 Replies

4. UNIX for Dummies Questions & Answers

Extracting m lines after n lines after match

Hi All, I would like to extract from a text file m lines skipping n lines after a string occurrency. Is it possible with grep? e.g. qqq ww eee rrr ttt yyy uuu I want to print 2 lines skipping 1 line after the string 'ww' result would be rrr ttt (2 Replies)
Discussion started by: f_o_555
2 Replies

5. Shell Programming and Scripting

awk : extracting unique lines based on columns

Hi, snp.txt CHR_A SNP_A BP_A_st BP_A_End CHR_B BP_B SNP_B R2 p-SNP_A p-SNP_B 5 rs1988728 74904317 74904318 5 74960646 rs1427924 0.377333 0.000740085 0.013930081 5 ... (12 Replies)
Discussion started by: genehunter
12 Replies

6. UNIX for Advanced & Expert Users

Extracting Lines in a file

Hi, We have a file where we need to extract the lines of a file based on the first three characters of every line in that file. Eg: RAM hill station SAM student RAM rose SAM apple RAM india SAM australia RAM happy RAM heaven SAM smile RAM glow So, all the lines that start... (5 Replies)
Discussion started by: pyaranoid
5 Replies

7. Shell Programming and Scripting

Extracting specific lines of data from a file and related lines of data based on a grep value range?

Hi, I have one file, say file 1, that has data like below where 19900107 is the date, 19900107 12 144 129 0.7380047 19900108 12 168 129 0.3149017 19900109 12 192 129 3.2766666E-02 ... (3 Replies)
Discussion started by: Wynner
3 Replies

8. Shell Programming and Scripting

AWK script - extracting min and max values from selected lines

Hi guys! I'm new to scripting and I need to write a script in awk. Here is example of file on which I'm working ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00 ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00 ATOM 4690 CD ... (18 Replies)
Discussion started by: grincz
18 Replies

9. Shell Programming and Scripting

exit after extracting range if lines - awk

Hello, I was wondering how is it possible if I use this command: awk 'NR >= 998 && NR <= 1000' file.txtTo exit after parsing the 1000th line ( last line targeted) ??? I observed that when executing this command for a large file, if the range of lines is at the beginning of the file it is... (2 Replies)
Discussion started by: black_fender
2 Replies

10. Shell Programming and Scripting

Extracting lines from a file with sed and awk

My source file is structured with two words on each line word1 word2 word1 word2 I am using sed and awk to grab groups of specific lines line=`awk 'NR>=4 && NR<=7' file1`; echo $line line=` sed -n '1,5'p file1`; echo $line The resulting output is word1 word2 word1 word2 word1... (1 Reply)
Discussion started by: bash_in_my_head
1 Replies

LEARN ABOUT CENTOS

locale::codes::langvar

Locale::Codes::LangVar(3)				User Contributed Perl Documentation				 Locale::Codes::LangVar(3)

NAME

       Locale::Codes::LangVar - standard codes for language variation identification

SYNOPSIS

	  use Locale::Codes::LangVar;

	  $lvar = code2langvar('acm');		       # $lvar gets 'Mesopotamian Arabic'
	  $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langvar_codes();
	  @names   = all_langvar_names();

DESCRIPTION

       The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, 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 variations. 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:

	  $lvar = code2langvar('arevela','alpha');
	  $lvar = code2langvar('arevela',LOCALE_LANGVAR_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian.

	   This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA".

	   This is the default code set.

ROUTINES

       code2langvar ( CODE [,CODESET] )
       langvar2code ( NAME [,CODESET] )
       langvar_code2code ( CODE ,CODESET ,CODESET2 )
       all_langvar_codes ( [CODESET] )
       all_langvar_names ( [CODESET] )
       Locale::Codes::LangVar::rename_langvar  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangVar::add_langvar  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangVar::delete_langvar  ( CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangVar::delete_langvar_alias  ( NAME )
       Locale::Codes::LangVar::rename_langvar_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::delete_langvar_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) 2011-2013 Sullivan Beck

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

perl v5.16.3							    2013-04-12						 Locale::Codes::LangVar(3)
All times are GMT -4. The time now is 05:39 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy