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Full Discussion: Sorting the csv file in Perl
Top Forums Shell Programming and Scripting Sorting the csv file in Perl Post 302749101 by DGPickett on Thursday 27th of December 2012 01:11:47 PM
Old 12-27-2012
You could install cygwin to get the nicer sort. A CSV file with commas in the data is particularly hard to sort, even for the unix sort. I would just read the CSV with PERL libraries and put every row into a sorted container like a tree (not a hash), so I can fetch them in order.
http://perl.plover.com/BTree/ http://search.cpan.org/~bryce/Sort-T...pm#DESCRIPTION
http://search.cpan.org/~rsavage/Tree...pm#DESCRIPTION
Many Perl containers can be sorted: http://search.cpan.org/~chthorman/Da...ble.pm#SORTING
http://search.cpan.org/~uri/Sort-Mak...pm#DESCRIPTION

Wading through all this, first you have to avoid one dimensional sorts unless you want to reorder your csv lines with the key first, or copy the key first as N bytes left justified so you can easily remove it. You do not need manually managed parent-child trees. Hash containers have their own hash based sort order, so when they say hash tree, the mean hash map, not tree map. I read an echo of my words here: http://www.perlmonks.org/index.pl?node_id=599204
Last edited by DGPickett; 12-27-2012 at 02:44 PM..
 

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LEARN ABOUT DEBIAN

httppower

httppower(8)							     powerman							      httppower(8)

NAME

       httppower - communicate with HTTP based power distribution units

SYNOPSIS

       httppower [--url URL]

DESCRIPTION

       httppower  is  a  helper program for powerman which enables it to communicate with HTTP based power distribution units.	It is run interac-
       tively by the powerman daemon.

OPTIONS

       -u, --url URL
	      Set the base URL.

INTERACTIVE COMMANDS

       The following commands are accepted at the httppower> prompt:

       auth user:pass
	      Authenticate to the base URL with specified user and password, using ``basic'' HTTP authentication which sends the user and password
	      over the network in plain text.

       seturl URL
	      Set the base URL.  Overrides the command line option.

       get [URL-suffix]
	      Send an HTTP GET to the base URL with the optional URL-suffix appended.

       post [URL-suffix] key=val[&key=val]...
	      Send an HTTP POST to the base URL with the optional URL-suffix appended, and key-value pairs as argument.

FILES

       /usr/sbin/httppower
       /etc/powerman/powerman.conf

ORIGIN

       PowerMan was originally developed by Andrew Uselton on LLNL's Linux clusters.  This software is open source and distributed under the terms
       of the GNU GPL.

SEE ALSO

       powerman(1), powermand(8), httppower(8), plmpower(8), vpcd(8), powerman.conf(5), powerman.dev(5), powerman-devices(7).

       http://sourceforge.net/projects/powerman

powerman-2.3.5							    2009-02-09							      httppower(8)
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