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Full Discussion: Calculation in Multiple files using awk
Top Forums Shell Programming and Scripting Calculation in Multiple files using awk Post 302443000 by Christoph Spohr on Friday 6th of August 2010 07:41:34 AM
Old 08-06-2010
O.k.

Code:
awk -F,  # make "," the new field delimiter
'{gsub(/ */,"",$0); # the format of your data is not consistent
                    # -> delete all blanks
split($0,t,",");    # split the current line at each comma
                    # store the values in an array called t
a[t[2]", "t[3]", "t[4]]+=$1} # now the values in t don't contain any spaces of commas any more
                    # so i construct a new string t[2]", "t[3]", "t[4] of the elements in t
                    # and use it as the name for the hash entry
                    # if this string is encountered again, add 1 to the value associated with the hash name
END{for (i in a) print a[i],i}' # when all files are processed
                    # print out first the number stored in the hash
                    # then the corresponding hash string
file1 file2 file3   # names of the three processed files

This User Gave Thanks to Christoph Spohr For This Post:
johnwilliams.sp
 

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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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