Sponsored Content
Top Forums Shell Programming and Scripting awk search/replace specific field, using variables for regexp & subsitution then overwrite file Post 302704401 by msabhi on Friday 21st of September 2012 02:12:40 PM
Old 09-21-2012
Code:
sed -i  "/$user/ s/$server/Yes/" master.csv_bkp

I would strongly recommend and i believe you would you use this on a backup file first and test..
This User Gave Thanks to msabhi For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

search and replace using awk with variables

Hi, I have been trying to use awk with variables that needs to search for a pattern and replace it with another pattern, the patterns are supplied in a variable. I have tried several different ways without success and hope that someone can help me. Here are the details echo $UPC 07007457809... (2 Replies)
Discussion started by: jerardfjay
2 Replies

2. Shell Programming and Scripting

awk search and replace and overwrite file

hi, i am doing awk '{gsub("hello", "bye", $0); print}' test.dat but I want to actually store the results of this global change into the file test.dat itself, i.e. I don't want the results to come to stdout, I want the results to overwrite the initial file how can I do this? thanks (3 Replies)
Discussion started by: JamesByars
3 Replies

3. Shell Programming and Scripting

awk search and replace field

I am writing a c++ program that has many calls of pow(input,2). I now realize that this is slowing down the program and these all should be input * input for greater speed. There should be a simple way of doing this replacement throughout my file with awk, but I am not very familiar with awk.... (2 Replies)
Discussion started by: bluejayek
2 Replies

4. Shell Programming and Scripting

awk how to replace specific field with new value

I need to replace specific field (x) in a table with new value (y): Input: 1 2 3 4 5 x 6 7 8 9 0 0 Output: 1 2 3 4 5 y 6 7 8 9 0 0 I have no idea how to do this. (10 Replies)
Discussion started by: setepo
10 Replies

5. Shell Programming and Scripting

AWK How to replace a field using 2 shell variables?

Hello everybody: I want to replace any field $2 of any file line (f.i. test.txt) matching $1 with a shell variable. $ cat test.txt F 0 B A H -12.33 Now I'm going to ask the value of variable B: $ SEARCHVAR=B $ OLDVAL=$(awk -v SEARCHVAR="$SEARCHVAR"... (4 Replies)
Discussion started by: basalt
4 Replies

6. Shell Programming and Scripting

Advanced AWK Regexp substring to int & Replace

Hi! I have a difficult problem, to step up a unknown version number in a text file, and save the file. It would be great to run script.sh and the version gets increased. Example the content of the textfile.txt hello version = x bye This include three steps 1. First find the char after... (2 Replies)
Discussion started by: Beachboy72
2 Replies

7. Shell Programming and Scripting

Replace specific field on specific line sed or awk

I'm trying to update a text file via sed/awk, after a lot of searching I still can't find a code snippet that I can get to work. Brief overview: I have user input a line to a variable, I then find a specific value in this line 10th field in this case. After asking for new input and doing some... (14 Replies)
Discussion started by: crownedzero
14 Replies

8. Shell Programming and Scripting

awk search and replace in a targeted field instead of $0

Hi I would like to apply this gawk command: gawk '{$0=gensub(/\y+\y/,"","g"); print}' file not to the whole $0 but just to the part of $0 that is between: (a number)"> and </mrk> Is it possible? thanks for your help. (4 Replies)
Discussion started by: louisJ
4 Replies

9. Shell Programming and Scripting

awk to replace a specific field in certain condition

Hi, I have a file like below PRUM,67016800 ,CC ,C1,67016800 , ,Y,Y,2 ,CK,BX,FOX ,00000001,EA,00000001,20141120 00:00:00, ,N,Y,Y,CK ABCDEF... (7 Replies)
Discussion started by: mady135
7 Replies

10. Shell Programming and Scripting

awk to assign points to variables based on conditions and update specific field

I have been reading old posts and trying to come up with a solution for the below: Use a tab-delimited input file to assign point to variables that are used to update a specific field, Rank. I really couldn't find too much in the way of assigning points to variable, but made an attempt at an awk... (4 Replies)
Discussion started by: cmccabe
4 Replies
PROCESSCSV.PY(1)					      Virtualization Support						  PROCESSCSV.PY(1)

NAME
processcsv.py - process virt-top CSV files SUMMARY
virt-top --csv data.csv processcsv.py < data.csv DESCRIPTION
virt-top is a top(1)-like utility for showing stats of virtualized domains. processcsv.py is a simple Python script that post-processes the output of "virt-top --csv". It is used like this: virt-top --csv data.csv processcsv.py < data.csv The second command will overwrite the following files in the current directory: "global.csv" This contains the global (host) statistics columns from the CSV file. "domainNN.csv" (multiple files) For each libvirt domain ID NN, a file is created containing the per-domain statistics from the CSV file. SEE ALSO
virt-top(1) AUTHORS
Richard W.M. Jones <rjones @ redhat . com> COPYRIGHT
(C) Copyright 2007-2012 Red Hat Inc., Richard W.M. Jones http://libvirt.org/ This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. virt-top-1.0.8 2013-12-29 PROCESSCSV.PY(1)
All times are GMT -4. The time now is 06:59 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy