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Full Discussion: What is ` in a shell script?
Top Forums Programming What is ` in a shell script? Post 302421759 by imsinha on Sunday 16th of May 2010 03:15:41 AM
Old 05-16-2010
Thanks for the response.

But in the given piece of code:
Code:
dummy=''hello"
p=${dummy}

In this case , the shell interprets dummy to be a variable and assigns the value of dummy to p:

But when I look into this case :
Code:
${username=`whoami`}

here the shell interprets username to be a command. Why is it so?

Last edited by Yogesh Sawant; 05-26-2010 at 06:31 AM.. Reason: added code tags
 

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Net::LDAP::FilterMatch(3)				User Contributed Perl Documentation				 Net::LDAP::FilterMatch(3)

NAME
Net::LDAP::FilterMatch - LDAP entry matching SYNOPSIS
use Net::LDAP::Entry; use Net::LDAP::Filter; use Net::LDAP::FilterMatch; my $entry = new Net::LDAP::Entry; $entry->dn("cn=dummy entry"); $entry->add ( 'cn' => 'dummy entry', 'street' => [ '1 some road','nowhere' ] ); my @filters = (qw/(cn=dummy*) (ou=*) (&(cn=dummy*)(street=*road)) (&(cn=dummy*)(!(street=nowhere)))/); for (@filters) { my $filter = Net::LDAP::Filter->new($_); print $_,' : ', $filter->match($entry) ? 'match' : 'no match' ," "; } ABSTRACT
This extension of the class Net::LDAP::Filter provides entry matching functionality on the Perl side. Given an entry it will tell whether the entry matches the filter object. It can be used on its own or as part of a Net::LDAP::Server based LDAP server. METHOD
match ( ENTRY [ ,SCHEMA ] ) Return whether ENTRY matches the filter object. If a schema object is provided, the selection of matching algorithms will be derived from schema. In case of error undef is returned. For approximate matching like (cn~=Schmidt) there are several modules that can be used. By default the following modules will be tried in this order: String::Approx Text::Metaphone Text::Soundex If none of these modules is found it will fall back on a simple regexp algorithm. If you want to specifically use one implementation only, simply do use Net::LDAP::FilterMatch qw(Text::Soundex); SEE ALSO
Net::LDAP::Filter COPYRIGHT
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. AUTHORS
Hans Klunder <hans.klunder@bigfoot.com> Peter Marschall <peter@adpm.de> perl v5.16.3 2013-06-07 Net::LDAP::FilterMatch(3)
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