How to extract column consistently ?

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A, B, C, D, E, F, G 1, 12, 13, 100, 12345, 432, 142324 2, 432, 435, 4543, 543, 5, 436543 324, 5, 543, 4365, 43643, 436543, 436543 how to extract particular column when i need of column of A or B or C i need it to redirect into a new file.

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cpanplus::shell::default::plugins::source

CPANPLUS::Shell::Default::Plugins::Source(3)		User Contributed Perl Documentation	      CPANPLUS::Shell::Default::Plugins::Source(3)

NAME

       CPANPLUS::Shell::Default::Plugins::Source - read in CPANPLUS commands

SYNOPSIS

	   CPAN Terminal> /source /tmp/list_of_commands /tmp/more_commands

DESCRIPTION

       This is a "CPANPLUS::Shell::Default" plugin that works just like your unix shells source(1) command; it reads in a file that has commands
       in it to execute, and then executes them.

       A sample file might look like this:

	   # first, update all the source files
	   x --update_source

	   # find all of my modules that are on the CPAN
	   # test them, and store the error log
	   a ^KANE$'
	   t *
	   p /home/kane/cpan-autotest/log

	   # and inform us we're good to go
	   ! print "Autotest complete, log stored; please enter your commands!"

       Note how empty lines, and lines starting with a '#' are being skipped in the execution.

BUG REPORTS

       Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>.

AUTHOR

       This module by Jos Boumans <kane@cpan.org>.

COPYRIGHT

       The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved.

       This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.

SEE ALSO

       CPANPLUS::Shell::Default, CPANPLUS::Shell, cpanp

perl v5.16.3							    2013-05-20			      CPANPLUS::Shell::Default::Plugins::Source(3)

Shell Programming and Scripting