Sponsored Content
Full Discussion: awk - change variable on fly
Top Forums UNIX for Dummies Questions & Answers awk - change variable on fly Post 302627495 by haczyk on Friday 20th of April 2012 04:13:53 PM
Old 04-20-2012
Heh ...its works. Why I didnt check earlier this package ? ;/

Many thanks for help ! Smilie

Best regards,
Paweł

Edit:

In your solution there is "getline" command. In my case I am using this script against large file (more then 90k records) and on output I see:
Code:
"gawk: (FILENAME=file.csv FNR=6477) fatal: cannot open pipe".

Somewhere should be function "close" ? (source http://www.gnu.org/software/gawk/manual/html_node/Close-Files-And-Pipes.html ). If I understand correctly getline open file one time and keep it in cache ;/

Do you know how to avoid this problem ?

Last edited by haczyk; 04-21-2012 at 01:48 AM.. Reason: Add question
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to change awk and shell variable value?

In awk script, #!/bin/sh awk 'BEGIN{i=0;}{i=i+5;}END{print i}' in.txt vr=0; vr=$i; echo "$vr" How can i assign that value of i in $vr(variable) of shell script? (7 Replies)
Discussion started by: cola
7 Replies

2. Shell Programming and Scripting

Change only the name of a variable

if I have a variable named z inside a java file, is there any way to globally change the name of the variable and all its occurences as a variable? (but not any other z that is not part of that variable name) (3 Replies)
Discussion started by: lydiaflamp
3 Replies

3. Shell Programming and Scripting

awk: change string variable

Hi. How to change string variable in awk? for example, I parse with awk script text file named some_name_with_extension.txt I want to print only some_name in my script .... varCompName = FILENAME print varCompName How to put not all symbols from FILENAME to variable? thank you This... (4 Replies)
Discussion started by: cintlt
4 Replies

4. Shell Programming and Scripting

Store Host lookup in variable ("on the fly")

Hi, I'm new here. I was wondering why I can't store a host lookup in a variable. for line in $(< blacklist) do STOREIP=host $line; if ]; then $line >> blacklist2; else $line >> blacklist3; fi done Result: "ip" command not found .. so how would I store the host lookup in the... (2 Replies)
Discussion started by: sOliver
2 Replies

5. Shell Programming and Scripting

using awk for setting variable but change the output of this variable within awk

Hi all, Hope someone can help me out here. I have this BASH script (see below) My problem lies with the variable path. The output of the command find will give me several fields. The 9th field is the path. I want to captured that and the I want to filter this to a specific level. The... (6 Replies)
Discussion started by: Cowardly
6 Replies

6. Shell Programming and Scripting

Change the filename variable value

Hi guys, I have a variable where i am storing the filename (with full path). I just need the value before ".txt". But instead of getting the filename i am getting the contents of the filename. FileName=/appl/data/Input/US/Test.txt a=`awk -F"." '{print $1}' ${FileName}` echo $a... (3 Replies)
Discussion started by: mac4rfree
3 Replies

7. Shell Programming and Scripting

Change Variable Value from Multiple Scripts and Use these Variable

Hi to All, Please find below details. file_config.config export file1_status="SUCCESS" export file2_status="SUCCESS" file_one.sh I am calling another two shell script from these script. I need to pass individual two script status (If it's "FAILED") to file_main.sh. file_main.sh I... (2 Replies)
Discussion started by: div_Neev
2 Replies

8. Shell Programming and Scripting

I can't change the value of my variable!

I made this HEADMAKER variable to pull the header from the first file in the loop, but then to stop so it doesn't override the file with later loops. However, I CANNOT get it to reassign the value of my variable away from "FIRST". I have also tried it with 1 and 0, and with and without quotes and... (3 Replies)
Discussion started by: crankymonkey
3 Replies

9. UNIX for Dummies Questions & Answers

Change variable value

I have big XML which i want to change all VERSIONNUMBER equal to 1,in existing file values of VERSIONNUMBER will be different as below now i want to change all VERSIONNUMBER values qual to 1.Please help me which will convert versionnumber values. <SHORTCUT OBJECTSUBTYPE ="" OBJECTTYPE ... (5 Replies)
Discussion started by: katakamvivek
5 Replies

10. Shell Programming and Scripting

Make change to variable value inside of awk script

Hello, I have text data that looks like this, Mrv16a3102061815532D 6 6 0 0 0 0 999 V2000 -0.4018 1.9634 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 -1.1163 1.5509 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 -1.1163 0.7259 ... (9 Replies)
Discussion started by: LMHmedchem
9 Replies
DPKG-AWK(1)						      General Commands Manual						       DPKG-AWK(1)

NAME
dpkg-awk - Utility to read a dpkg style db file SYNOPSIS
dpkg-awk [(-f|--file) filename] [(-d|--debug) ##] [(-s|--sort) list] [(-rs|--rec_sep) ??] '<fieldname>:<regex>' ... -- <out_fieldname> .. DESCRIPTION
dpkg-awk Parses a dpkg status file (or other similarly formatted file) and outputs the resulting records. It can use regex on the field values to limit the returned records, it can also be told which fields to output, and it can sort the matched fields. OPTIONS
-f filename --file filename The file to parse. The default is /var/lib/dpkg/status. -d [#] --debug [#] Each time this is specified, it increased the debug level. -s field(s) --sort field(s) A space or comma separated list of fields to sort on. -n field(s) --numeric field(s) A space or comma separated list of fields that should be interpreted as numeric in value. -rs ?? --rec_sep ?? Output this string at the end of each output paragraph. -h --help Display some help. fieldname The fields from the file, that are matched with the regex given. The fieldnames are case insensitive. out_fieldname The fields from the file, that are output for each record. If the first field listed begins with ^, then the list of fields that follows will NOT be output. BUGS
Be warned that the author has only a shallow understanding of the dpkg packaging system, so there are probably tons of bugs in this pro- gram. This program comes with no warranties. If running this program causes fire and brimstone to rain down upon the earth, you will be on your own. This program accesses the dpkg database directly in places, querying for data that cannot be gotten via dpkg. AUTHOR
Adam Heath <doogie@debian.org> DEBIAN
Debian Utilities DPKG-AWK(1)
All times are GMT -4. The time now is 05:19 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy