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Full Discussion: Row bind multiple csv files having different column headers
Top Forums Shell Programming and Scripting Row bind multiple csv files having different column headers Post 302985051 by rbatte1 on Friday 4th of November 2016 07:26:18 AM
Old 11-04-2016
I'm guessing that you might have common column headings somewhere that you want to merge in, but in that case, what rule would you want to apply:-
  • file1 always?
  • file2 always?
  • file2 if value is bigger/smaller?
  • value only if matched?
  • the sequence for records to be added?
  • anything else?

Is this something that could be covered with the paste command perhaps? You might need to prefix your file2 data with ,, to make the column counts match, perhaps with sed -i '2,$ s/^/,,/' file2 or some variation?


Does that help? It still doesn't get over the question of matching columns either and might not do what you want at all. It would help if we had more test data and the various options explained.




Kind regards,
Robin
 

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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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