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Top Forums Shell Programming and Scripting Compare 2 csv files by columns, then extract certain columns of matcing rows Post 302904233 by bkane3 on Tuesday 3rd of June 2014 04:19:56 AM
Old 06-03-2014
Thank you Akshay. That worked.

I have another similar matching problem. I want to compare the previous outputted result file (I will call it file3) with file4 (below) by 'offer','category','brand', 'company'. Like before, I want to extract exact matching rows' remaining columns ('quantity', 'offervalue') from file4 and add them to file3 columns, and remove no match rows from file3.

Code:
$ head file4
offer,category,quantity,company,offervalue,brand
1190530,9115,1,108500080,5,93904
1194044,9909,1,107127979,1,6732
1197502,3203,1,106414464,0.75,13474
1198271,5558,1,107120272,1.5,5072
1198272,5558,1,107120272,1.5,5072
1198273,5558,1,107120272,1.5,5072
1198274,5558,1,107120272,1.5,5072
1198275,5558,1,107120272,1.5,5072
1199256,4401,1,105100050,2,13791

Thanks
 

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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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