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Top Forums Shell Programming and Scripting Problem with syntax using awk Post 302446334 by ajincoep on Wednesday 18th of August 2010 09:38:02 AM
Old 08-18-2010
Problem with syntax using awk

Hi Guys,
When below code is executed in script, I get desired output in output file.

Code:
awk 'NR >= $start_line  && NR <= 3' master_scriptlist.txt > $driver1/scriptlist.txt

But when i replace 3 with a variable end_line=3, I do not get ouput. See code below. Is there any problem with syntax

Code:
awk 'NR >= $start_line  && NR <= $end_line' master_scriptlist.txt > $driver1/scriptlist.txt

 

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Pod::Simple::SimpleTree(3pm)				User Contributed Perl Documentation			      Pod::Simple::SimpleTree(3pm)

NAME
Pod::Simple::SimpleTree -- parse Pod into a simple parse tree SYNOPSIS
% cat ptest.pod =head1 PIE I like B<pie>! % perl -MPod::Simple::SimpleTree -MData::Dumper -e "print Dumper(Pod::Simple::SimpleTree->new->parse_file(shift)->root)" ptest.pod $VAR1 = [ 'Document', { 'start_line' => 1 }, [ 'head1', { 'start_line' => 1 }, 'PIE' ], [ 'Para', { 'start_line' => 3 }, 'I like ', [ 'B', {}, 'pie' ], '!' ] ]; DESCRIPTION
This class is of interest to people writing a Pod processor/formatter. This class takes Pod and parses it, returning a parse tree made just of arrayrefs, and hashrefs, and strings. This is a subclass of Pod::Simple and inherits all its methods. This class is inspired by XML::Parser's "Tree" parsing-style, although it doesn't use exactly the same LoL format. METHODS
At the end of the parse, call "$parser->root" to get the tree's top node. Tree Contents Every element node in the parse tree is represented by an arrayref of the form: "[ elementname, \%attributes, ...subnodes... ]". See the example tree dump in the Synopsis, above. Every text node in the tree is represented by a simple (non-ref) string scalar. So you can test "ref($node)" to see whather you have an element node or just a text node. The top node in the tree is "[ 'Document', \%attributes, ...subnodes... ]" SEE ALSO
Pod::Simple perllol The "Tree" subsubsection in XML::Parser SUPPORT
Questions or discussion about POD and Pod::Simple should be sent to the pod-people@perl.org mail list. Send an empty email to pod-people-subscribe@perl.org to subscribe. This module is managed in an open GitHub repository, http://github.com/theory/pod-simple/ <http://github.com/theory/pod-simple/>. Feel free to fork and contribute, or to clone git://github.com/theory/pod-simple.git <git://github.com/theory/pod-simple.git> and send patches! Patches against Pod::Simple are welcome. Please send bug reports to <bug-pod-simple@rt.cpan.org>. COPYRIGHT AND DISCLAIMERS
Copyright (c) 2002 Sean M. Burke. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. 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. AUTHOR
Pod::Simple was created by Sean M. Burke <sburke@cpan.org>. But don't bother him, he's retired. Pod::Simple is maintained by: o Allison Randal "allison@perl.org" o Hans Dieter Pearcey "hdp@cpan.org" o David E. Wheeler "dwheeler@cpan.org" perl v5.14.2 2012-05-23 Pod::Simple::SimpleTree(3pm)
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