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Homework and Emergencies Homework & Coursework Questions Cannot correctly connect multi-stage C command pipe (among others) (FYI: a lot of code) Post 302787959 by Corona688 on Sunday 31st of March 2013 02:15:19 PM
Old 03-31-2013
Code:
      dup2(prev[0],0);
      dup2(prev[1],1);

You are attaching the reading end of the pipe to standard input. This makes sense.

You are attaching the writing end of the pipe to standard output. This makes sense.

However, you are doing both to the same pipe. This does not make sense. To picture the loop you've made:

Code:
 /-->grep---\
 \----------/

Where what you actually want is:

Code:
command1 --> command2 --> command3

command1 writes into the write end of pipe A. command2 reads from pipe A, writes to pipe B. command3 reads from pipe B, writes to the terminal.

Last edited by Corona688; 03-31-2013 at 03:26 PM..
 

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Dist::Zilla::Plugin::TemplateModule(3pm)		User Contributed Perl Documentation		  Dist::Zilla::Plugin::TemplateModule(3pm)

NAME
Dist::Zilla::Plugin::TemplateModule - a simple module-from-template plugin VERSION
version 4.300020 DESCRIPTION
This is a ModuleMaker used for creating new Perl modules files when minting a new dist with "dzil new". It uses Text::Template (via Dist::Zilla::Role::TextTemplate) to render a template into a Perl module. The template is given two variables for use in rendering: $name, the module name; and $dist, the Dist::Zilla object. The module is always created as a file under ./lib. By default, the template looks something like this: use strict; use warnings; package {{ $name }}; 1; ATTRIBUTES
template The "template" parameter may be given to the plugin to provide a different filename, absolute or relative to the build/profile directory. If this parameter is not specified, this module will use the boilerplate module template included in this module. MINTING CONFIGURATION
This module is part of the standard configuration of the default Dist::Zilla Minting Profile, and all profiles that don't set a custom ':DefaultModuleMaker' so you don't need to normally do anything to configure it. dzil new Some::Module # creates ./Some-Module/* # creates ./Some-Module/lib/Some/Module.pm However, for those who wish to configure this ( or any subclasses ) this is presently required: [TemplateModule / :DefaultModuleMaker] ; template = SomeFile.pm AUTHOR
Ricardo SIGNES <rjbs@cpan.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Ricardo SIGNES. 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 v5.14.2 2012-06-21 Dist::Zilla::Plugin::TemplateModule(3pm)
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