Pipe usage error while visiting directories

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getopt::usaginator

Getopt::Usaginator(3pm) 				User Contributed Perl Documentation				   Getopt::Usaginator(3pm)

NAME

       Getopt::Usaginator - Conjure up a usage function for your applications

VERSION

       version 0.0012

SYNOPSIS

	   use Getopt::Usaginator <<_END_;

	       Usage: xyzzy <options>

	       --derp	       Derp derp derp
	       --durp	       Durp durp durp
	       -h, --help      This usage

	   _END_

	   # The 'usage' subroutine is now installed

	   ...

	   $options = parse_options( @ARGV ); # Not supplied by Usaginator

	   usage if $options{help}; # Print usage and exit with status 0

	   if ( ! $options{derp} ) {
	       # Print warning and usage and exit with status -1
	       usage "You should really derp";
	   }

	   if ( $options{durp} ) {
	       # Print warning and usage and exit with status 2
	       usage 2 => "--durp is not ready yet";
	   }

	   ...

	   usage 3 # Print usage and exit with status 3

DESCRIPTION

       Getopt::Usaginator is a tool for creating a handy usage subroutine for commandline applications

       It does not do any option parsing, but is best paired with Getopt::Long or any of the other myriad of option parsers

USAGE

   use Getopt::Usaginator <usage>
       Install a "usage" subroutine configured with the <usage> text

   $code = Getopt::Usaginator->usaginator( <usage> )
       Return a subroutine configured with the <usage> text

   ...
       More advanced usage is possible, peek under the hood for more information

	   perldoc -m Getopt::Usaginator

       An example:

	   use Getopt::Usaginator
	       # Called with the error
	       error => sub { ... },
	       # Called when usage printing is needed
	       usage => sub { ... },
	       ...
	   ;

An example with Getopt::Long parsing
	   use Getopt::Usaginator ...

	   sub run {
	       my $self = shift;
	       my @arguments = @_;

	       usage 0 unless @arguments;

	       my ( $help );
	       {
		   local @ARGV = @arguments;
		   GetOptions(
		       'help|h|?' => $help,
		   );
	       }

	       usage 0 if $help;

	       ...
	   }

AUTHOR

	 Robert Krimen <robertkrimen@gmail.com>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2010 by Robert Krimen.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.10.1							    2010-06-05						   Getopt::Usaginator(3pm)

Programming