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Full Discussion: csv file to array, match field1, replace in flat file field1 to field2
Top Forums Shell Programming and Scripting csv file to array, match field1, replace in flat file field1 to field2 Post 302282726 by frankie_konin on Sunday 1st of February 2009 05:15:48 PM
Old 02-01-2009
Hammer & Screwdriver csv file to array, match field1, replace in flat file field1 to field2
Hello, i am bit stuck with making script for automatic procedure.

Case:

Two files. One is flat file, other is csv file.
csv file has two column/fields with comma delimited data.

Here is what i need (explained way)

CSV file:

field1 | field2
"hello","byebye"
"hello2","byebye2"
"hello3","byebye3"

Flat file has matching data:

"hello"
"hello2"
"hello3"

If found:
"hello"
"hello2"
"hello3"
..in flat file, then it must be replaced from csv file with FIELD2 according
to search match.

But i have to search "hello" from csv file field1 data with flat file together and if found match in
flat file, it must be replaced from csv file with field2 data.

I know i could split csv file to two files, one containing field1 data and
second file field2 data but that would be not so dynamic way.
Though then i could easily use loop with cat + sed

Idea is to make nagios mass updating hosts naming changes in config.
So im wondering could i do it with awk or sed more universal way?

Any examples would be great help.

Thanks in advance..

Frankie
Last edited by frankie_konin; 02-01-2009 at 06:21 PM..
 

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LEARN ABOUT CENTOS

processcsv.py

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)
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