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Full Discussion: Sort on mm/dd/yyyy csv
Top Forums Shell Programming and Scripting Sort on mm/dd/yyyy csv Post 302795925 by wbrunc on Thursday 18th of April 2013 03:40:14 PM
Old 04-18-2013
Sort on mm/dd/yyyy csv
I have the following csv data that I would like to sort on the 4th field by date
from oldest to newest.

data:
Code:
,,,02/06/2012,Carry H,Add,Add,Sys_RTH,111.222.333.777
4/7/12,,,03/03/2013,Parry H,Add,Add,Sys_RTH,111.222.333.776
,,,12/06/2012,Harry H,Add,Add,Sys_RTH,111.222.333.778
4/5/13,B.Bee,,09/03/2012,Marry H,Add,Add,Sys_RTH,111.222.333.770

I use the following sort command but I cannot get it to work properly:
Code:
sort -t"," +3  -k1.7,1.10 -k1.1,1.2 -k1.4,1.5  data

- Delimeter is ","
- Skip the first 3 fields to sort on the 4th field
- At 4th field, sort "k"olumn 1 for chars 7 thru 10 ( yyyy )
- Next sort key is "k"olumn 1 for chars 1 and 2 ( mm )
- Final key is "k"olumn 1 for chars 4 and 5 ( dd )

Here's the result I get:

Code:
,,,02/06/2012,Carry H,Add,Add,Sys_RTH,111.222.333.777
4/7/12,,,03/03/2013,Parry H,Add,Add,Sys_RTH,111.222.333.776
4/5/13,B.Bee,,09/03/2012,Marry H,Add,Add,Sys_RTH,111.222.333.770
,,,12/06/2012,Harry H,Add,Add,Sys_RTH,111.222.333.778

Desired result:
Code:
,,,02/06/2012,Carry H,Add,Add,Sys_RTH,111.222.333.777
4/5/13,B.Bee,,09/03/2012,Marry H,Add,Add,Sys_RTH,111.222.333.770
,,,12/06/2012,Harry H,Add,Add,Sys_RTH,111.222.333.778
4/7/12,,,03/03/2013,Parry H,Add,Add,Sys_RTH,111.222.333.776

Anyone see what I'm doing wrong?
Thanks,
wbrunc
 

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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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