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Top Forums Shell Programming and Scripting Perl newbie question re: variables Post 302355411 by rethink on Tuesday 22nd of September 2009 03:31:40 PM
Old 09-22-2009
Perl newbie question re: variables

Hi there

apologies for the really basic question but if i have a variable called $string that I want to run a regex against and output to another variable ...how do i do it, I know that if i wanted to alter the current $string variable i would do

Code:
$string=~ s/old/new/g;

but i kind of want to do this (even though this blatantly doesnt work)

Code:
$var = $string=~ s/old/new/g;
print "$var\n";

which would leave $string intact

apologies for the newbie question Smilie
 

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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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