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Top Forums Shell Programming and Scripting Question about special variables: "-" and "$_" Post 302405980 by honglus on Sunday 21st of March 2010 07:00:26 AM
Old 03-21-2010
Quote:
Originally Posted by kshji
Ksh man, section Variable Assignments.

Bash man, section 3.4 Shell Parameters
Thanks but I couldn't find answers from the links:

"bash man" explans !$ not $_

!!:$ designates the last argument of the preceding command. This may be shortened to !$
 

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IO::All::HTTP(3pm)					User Contributed Perl Documentation					IO::All::HTTP(3pm)

NAME
IO::All::LWP - Extends IO::All to HTTP URLs SYNOPSIS
use IO::All; $content < io('http://example.org'); # GET webpage into scalar io('http://example.org') > io('index.html'); # GET to file "hello " > io('http://example.org/index.html'); # PUT webpage # two ways of getting a page with a password: $content < io('http://me:secret@example.org'); $content < io('http://example.org')->user('me')->password('secret'); DESCRIPTION
This module extends IO::All for dealing with HTTP URLs. Note that you don't need to use it explicitly, as it is autoloaded by IO::All whenever it sees something that looks like an HTTP URL. The SYNOPSIS shows some simple typical examples, but there are many other interesting combinations with other IO::All features! For example, you can get an HTTP URL and write the content to a socket, or to an FTP URL, of to a DBM file. METHODS
This is a subclass of IO::All::LWP. The only new method is "http", which can be used to create a blank IO::All::HTTP object; or it can also take an HTTP URL as a parameter. Note that in most cases it is simpler just to call io('http://example.com'), which calls the "http" method automatically. OPERATOR OVERLOADING
The same operators from IO::All may be used. < GETs an HTTP URL; > PUTs to an HTTP URL. SEE ALSO
IO::All, IO::All::LWP, LWP. AUTHORS
Ivan Tubert-Brohman <itub@cpan.org> and Brian Ingerson <ingy@cpan.org> COPYRIGHT
Copyright (c) 2007. Ivan Tubert-Brohman and Brian Ingerson. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See <http://www.perl.com/perl/misc/Artistic.html> perl v5.10.0 2007-03-29 IO::All::HTTP(3pm)
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