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Full Discussion: Regular Expressions HELP - PERL
Top Forums Shell Programming and Scripting Regular Expressions HELP - PERL Post 302202515 by era on Thursday 5th of June 2008 03:45:14 AM
Old 06-05-2008
Or, finally, with Perl:

Code:
if ($line =~ m/'(\d+)\)/) { $Var1=$1 }

The reason you were getting syntax errors is that backticks in Perl will undergo what the documentation calls "double-quotish" expansion. Basically, this means that if you want a backslash to be passed to the shell, you will need to double it, because Perl already parses one level of backslashes. Also, the value of $line is being interpolated by Perl, so the shell sees the literal value echo USING (FILE '/TEST1/FILENAME'5000) without any quoting, and complains about the opening parenthesis. You can get around this with proper quoting; but of course, for trivial string manipulations, Perl itself is actually much better suited than the shell.
 

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LEARN ABOUT MOJAVE

ppi::token::quote

PPI::Token::Quote(3)					User Contributed Perl Documentation				      PPI::Token::Quote(3)

NAME

       PPI::Token::Quote - String quote abstract base class

INHERITANCE

	 PPI::Token::Quote
	 isa PPI::Token
	     isa PPI::Element

DESCRIPTION

       The "PPI::Token::Quote" class is never instantiated, and simply provides a common abstract base class for the four quote classes.  In PPI,
       a "quote" is limited to only the quote-like things that themselves directly represent a string. (although this includes double quotes with
       interpolated elements inside them).

       The subclasses of "PPI::Token::Quote" are:

       '' - PPI::Token::Quote::Single
       "q{}" - PPI::Token::Quote::Literal
       "" - PPI::Token::Quote::Double
       "qq{}" - PPI::Token::Quote::Interpolate

       The names are hopefully obvious enough not to have to explain what each class is here. See their respective pages for more details.

       Please note that although the here-doc does represent a literal string, it is such a nasty piece of work that in PPI it is given the honor
       of its own token class (PPI::Token::HereDoc).

METHODS

   string
       The "string" method is provided by all four ::Quote classes. It won't get you the actual literal Perl value, but it will strip off the
       wrapping of the quotes.

	 # The following all return foo from the ->string method
	 'foo'
	 "foo"
	 q{foo}
	 qq <foo>

   literal
       The "literal" method is provided by ::Quote:Literal and ::Quote::Single.  This returns the value of the string as Perl sees it: without the
       quote marks and with "\" and "'" resolved to "" and "'".

       The "literal" method is not implemented by ::Quote::Double or ::Quote::Interpolate yet.

SUPPORT

       See the support section in the main module.

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2001 - 2011 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.18.2							    2011-02-25						      PPI::Token::Quote(3)
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