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Full Discussion: How do I extract specific column in multiple csv files?
Top Forums UNIX for Beginners Questions & Answers How do I extract specific column in multiple csv files? Post 303035874 by RudiC on Thursday 6th of June 2019 05:23:17 AM
Old 06-06-2019
Try
Code:
awk -F, '
NR == 1         {for (i=1; i<=NF; i++) if ($i == SRCH) COL=i
                 HD = $1
                }
FNR == 1        {FCNT++
                 HD = HD OFS SRCH
                 next
                }
! EX[$1]++      {NM[++ROWCNT] = $1
                }
                {T[$1,FCNT] = $COL
                }
END             {print HD
                 for (i=1; i<=ROWCNT; i++)      {TMP = NM[i]
                                                 printf "%s", TMP
                                                 for (j=1; j<=FCNT; j++) printf ",%s", T[TMP,j]?T[TMP,j]:"NA" 
                                                 printf RS
                                                }
                }
' SRCH="Curr ART" OFS=, file[1-3]
Name,Curr ART,Curr ART,Curr ART
GETHome,47,33,40
GETregistry,13,22,NA
GEThomeLayout,17,NA,251
GETPublish,NA,110,144

This User Gave Thanks to RudiC For This Post:
Raghuram717
 

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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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