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Full Discussion: Sed Question?
Top Forums Shell Programming and Scripting Sed Question? Post 302163974 by drl on Sunday 3rd of February 2008 09:30:38 PM
Old 02-03-2008
Hi.
Quote:
Originally Posted by Kweekwom
drl,

Are you saying I need to get each of the numbers into a separate line?
Yes, exactly! Then, presumably, you'd want to put them back together again. Here's one way to do that:
Code:
#!/bin/bash3 -

# @(#) user2    Demonstrate eval and tr.

# echo "Input first set of nodes"

# read node1 # This is where you insert the string of numbers
# node1="435-437,476-492 70-72,76,80-86"
node1="435-437 476-492 70-72 76 80-86"

result=`echo $node1 | sed -r -e 's/([0-9]+)-([0-9]+)[ ]*/{\1..\2} /g'`

echo {1..5}

eval echo $result |
tee t1 |
tr '[, ]' '\n' |
tee t2 |
sort -n |
tr '\n' ' '
echo

exit 0

Producing:
Code:
% ./user2
1 2 3 4 5
70 71 72 76 80 81 82 83 84 85 86 435 436 437 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492

The tee allows you to look at the intermediate form of the data. See the man pages for details on the rest. The tr especially often varies from system to system.

That's part of the design of *nix -- put general tools together to solve specific problems.

Best wishes ... cheers, drl
 

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LEARN ABOUT REDHAT

net::dns::question

Net::DNS::Question(3)					User Contributed Perl Documentation				     Net::DNS::Question(3)

NAME

       Net::DNS::Question - DNS question class

SYNOPSIS

       "use Net::DNS::Question"

DESCRIPTION

       A "Net::DNS::Question" object represents a record in the question section of a DNS packet.

METHODS

       new

	   $question = Net::DNS::Question->new("example.com", "MX", "IN");

       Creates a question object from the domain, type, and class passed as arguments.

       qname, zname

	   print "qname = ", $question->qname, "
";
	   print "zname = ", $question->zname, "
";

       Returns the domain name.  In dynamic update packets, this field is known as "zname" and refers to the zone name.

       qtype, ztype

	   print "qtype = ", $question->qtype, "
";
	   print "ztype = ", $question->ztype, "
";

       Returns the record type.  In dymamic update packets, this field is known as "ztype" and refers to the zone type (must be SOA).

       qclass, zclass

	   print "qclass = ", $question->qclass, "
";
	   print "zclass = ", $question->zclass, "
";

       Returns the record class.  In dynamic update packets, this field is known as "zclass" and refers to the zone's class.

       print

	   $question->print;

       Prints the question record on the standard output.

       string

	   print $qr->string, "
";

       Returns a string representation of the question record.

       data

	   $qdata = $question->data($packet, $offset);

       Returns the question record in binary format suitable for inclusion in a DNS packet.

       Arguments are a "Net::DNS::Packet" object and the offset within that packet's data where the "Net::DNS::Question" record is to be stored.
       This information is necessary for using compressed domain names.

COPYRIGHT

       Copyright (c) 1997-2002 Michael Fuhr.  All rights reserved.  This program is free software; you can redistribute it and/or modify it under
       the same terms as Perl itself.

SEE ALSO

       perl(1), Net::DNS, Net::DNS::Resolver, Net::DNS::Packet, Net::DNS::Update, Net::DNS::Header, Net::DNS::RR, RFC 1035 Section 4.1.2

perl v5.8.0							    2002-10-12						     Net::DNS::Question(3)
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