Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Simple awk search problem
Top Forums Shell Programming and Scripting Simple awk search problem Post 302580563 by Ygor on Friday 9th of December 2011 12:44:07 AM
Old 12-09-2011
Scan though every line in the file using awk...
Code:
/reg_exp/{x=NR}
For any line that matches reg_exp, store the row number in variable "x". Note: at the end of scanning the file, variable "x" will hold the line number of the last occurance of reg_exp.
Code:
x{y[NR]=$0}
If variable "x" is not null, then store each line in array "y" using line number as the index.
Code:
END{if(x)for(z=x;z<=NR;z++)print y[z]}
At the end of the file, if reg_exp was found, print each line from array "y" starting from "x".
This User Gave Thanks to Ygor For This Post:
ni2
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Simple AWK script problem.

Hi all, I have set up a simple awk script to calculate the average of values that are printed out a number of times per second (the number of time the printing occurs varies). The data is of the format shown below: 1 4.43 1 3.65 1 2.45 2 7.65 2 8.23 2 5.65 3 4.65 3 6.21 .. .. 120... (4 Replies)
Discussion started by: omnomtac
4 Replies

2. Shell Programming and Scripting

awk gsub simple problem

Hi New to shell script and awk and need assistance on this problem. I need to use a variable to substitute a string in an external file and write the changed info to another file. At first I did not know if you could use a variable as the sub value but the following showed me that I can. ... (3 Replies)
Discussion started by: hukcjv
3 Replies

3. Shell Programming and Scripting

simple awk problem

pcn linus> ntpq -p remote refid st t when poll reach delay offset disp ============================================================================== +smpnn01 ntpsrv1 2 u 829 1024 377 1.46 0.793 0.85 *smpnn02 ntpsrv1 2 u ... (2 Replies)
Discussion started by: arch12
2 Replies

4. Shell Programming and Scripting

Search with awk problem

Hi There is one problem which i am not able to find the solution :( Suppose there are two files tmpfile1 and tmpfile2 . tmpfile1 contains data as :bash> cat tempfile1 1222 1234 1234 1234 :bash> now my code is written as getcommand="cat tmpfile2" while(getcommand | getline)... (7 Replies)
Discussion started by: aishsimplesweet
7 Replies

5. Shell Programming and Scripting

How to do a simple awk search?

Hello I am trying to do global search on access log files for a date and for either 'Error|error' string ls -lrt *access* | grep "Sep 23" | awk '{print $9}'|xargs awk '/23\/Sep\/2011/ && /Error/ || /error' Above matches All lines with 'error' as well unfortunately. Is there a... (6 Replies)
Discussion started by: delphys
6 Replies

6. Shell Programming and Scripting

simple awk problem

Hello; I have the following log file: 10/11/11 10:42:02 LOCK Q Userid:284 Username=root UserPID:23158 Device:marlin batch 10/11/11 10:42:02 TableNr:226 TableName:iatkn RecId:116290398 Flags:X Q H 10/11/11 10:42:02 LOCK CONTENTION X 10/11/11 10:42:02 ... (3 Replies)
Discussion started by: delphys
3 Replies

7. Shell Programming and Scripting

Simple awk problem II

Hello; Trying to figure out how to keep just the contents between the two search lines: awk '/regexp_1/ ,/regexp_2/' I do not want lines containing regexp_1 and regexp_2 in the output. Thank you for any ideas Video tutorial on how to use code tags in The UNIX and Linux Forums. (5 Replies)
Discussion started by: delphys
5 Replies

8. Shell Programming and Scripting

another simple awk problem

Hello; I need to print two previous lines after searching for a reg exp: awk '/haywood/' should produce the following =================== p9J46THe020804 89922 Tue Oct 18 21:06 MAILER-DAEMON (host map: lookup (haywood.com): deferred) ... (1 Reply)
Discussion started by: delphys
1 Replies

9. Shell Programming and Scripting

simple awk sort problem

Hello folks I have the following output UNIX95=1 ps -ef -o pcpu,user,pid,args |more %CPU USER PID COMMAND 0.03 root 0 swapper 0.08 root 1 init 0.00 root 13 net_str_cached 0.00 root 12 usbhubd 0.00 root 11 escsid 0.00 root 10... (3 Replies)
Discussion started by: delphys
3 Replies

10. Shell Programming and Scripting

Problem passing a search pattern to AWK inside a script loop

Learning, stumbling! My progress in shell scripting is slow. Now I have this doubt: I have the following file (users.txt): AU0909,on AU0309,off AU0209,on AU0109,off And this file (userson.txt) AU0909 AU0209 AU0109 AU0309 I just want to set those users on userson.txt to "off" in... (14 Replies)
Discussion started by: quinestor
14 Replies

LEARN ABOUT MOJAVE

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) 2011-2013 Sullivan Beck

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

perl v5.18.2							    2013-11-04					       Locale::Codes::LangExt(3pm)
All times are GMT -4. The time now is 07:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy