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Top Forums Shell Programming and Scripting How to understand special character for line reading in bash shell? Post 303039064 by Scrutinizer on Saturday 21st of September 2019 02:27:26 PM
Old 09-21-2019
^[^#]*= is an extended regular expression and it means 0 or more non-# characters starting at the beginning of the line followed by an equal sign..

${line%%=*} is parameter expansion and it returns the characters to the left of the first = sign
${line#*=} is parameter expansion and it returns the characters to the right of the rightmost = sign
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IO::All::HTTPS(3pm)					User Contributed Perl Documentation				       IO::All::HTTPS(3pm)

NAME
IO::All::HTTPS - Extends IO::All for HTTPS URLs SYNOPSIS
use IO::All; $content < io('https://example.org'); # GET webpage # two ways of getting a page with a password: $content < io('https://me:secret@example.org'); $content < io('https://example.org')->user('me')->password('secret'); DESCRIPTION
This module extends IO::All for dealing with HTTPS 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 HTTPS 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 HTTPS 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 "https", which can be used to create a blank IO::All::HTTPS object; or it can also take an HTTPS URL as a parameter. Note that in most cases it is simpler just to call io('https://example.com'), which calls the "https" method automatically. OPERATOR OVERLOADING
The same operators from IO::All may be used. < GETs an HTTPS URL; > PUTs to an HTTPS 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::HTTPS(3pm)
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