Free cryptography tutorial software for linux

Prima::tutorial is an introductory tutorial.

Programming graphic interfaces is often considered somewhat boring, and not without a cause. It is a small pride in knowing that your buttons and scrollbars work exactly as millions of others buttons and scrollbars do, so whichever GUI toolkit is chosen, it is usually regarded as a tool of small importance, and the less obtrusive, the better.

Given that, and trying to live up to the famous Perl making easy things easy and hard things possible mantra, this manual page is an introductory tutorial meant to show how to write easy things easy. The hard things are explained in the other Prima manual pages ( see Prima ).

Array::Each::Tutorial - POD giving various examples how to use Array::Each.

SYNOPSIS

man Array::Each
man Array::Each::Tutorial

or

perldoc Array::Each
perldoc Array::Each::Tutorial

Overview

This tutorial contains only POD, so dont do this:

use Array::Each::Tutorial; # dont do this

Rather, simply read the POD (as you are doing). But first, please read the docs for Array::Each, because the whole scoop is there.

This tutorial is intended to augment those docs with examples showing situations where you might want to use Array::Each instead of other techniques.

EXAMPLES

Parallel Arrays vs. Using a Hash

First of all, use a hash. Its almost always the best solution if you want to associate a "key" with a "value". And there are modules available that will let you do wonderful things with hashes, like keeping the keys sorted or keeping them in the order they were added.

So given a hash, you might at some point want to do this:

my %h = ( a=>1, b=>2, c=>3, d=>4, e=>5 );
while( my( $k, $v ) = each %h ) {
# ... do something with $k and $v ...
}

On the other hand, if parallel arrays better implement your algorithm, then you may find you want to do something like this:

my @k = qw( a b c d e );
my @v = qw( 1 2 3 4 5 );
for my $i ( 0 .. $#k ) {
my( $k, $v ) = ( $k[$i], $v[$i] );
# ... do something with $k and $v (and maybe $i) ...
}

Using Array::Each, you could do the same thing this way:

use Array::Each;
my @k = qw( a b c d e );
my @v = qw( 1 2 3 4 5 );
my $obj = Array::Each->new( @k, @v );
while( my( $k, $v, $i ) = $obj->each ) {
# ... do something with $k and $v (and maybe $i) ...
}

If you dont need $i at all, you can leave it out, e.g.,

while( my( $k, $v ) = $obj->each ) {
# ... do something with $k and $v ...
}

If you have more than two parallel arrays, include them all in the call to new() and add as many "capture" variables as you need, e.g.,

my @k = qw( a b c d e );
my @v = qw( 1 2 3 4 5 );
my @p = qw( - + ~ = : );
my $obj = Array::Each->new( @k, @v, @p );
while( my( $k, $v, $p, $i ) = $obj->each ) {
# ... do something with $k, $v, and $p (and maybe $i) ...
}

PAR::Tutorial is a cross-platform Packaging and Deployment with PAR.

SYNOPSIS

This is a tutorial on PAR, first appeared at the 7th Perl Conference. The HTML version of this tutorial is available online as http://aut.dyndns.org/par-tutorial/.

On Deploying Perl Applications

% sshnuke.pl 10.2.2.2 -rootpw="Z1ON0101"
Perl v5.6.1 required--this is only v5.6.0, stopped at sshnuke.pl line 1.
BEGIN failed--compilation aborted at sshnuke.pl line 1.

Q: "Help! I cant run your program!"
A1: Install Perl & perl -MCPAN -einstall(...)
How do we know which modules are needed?
New versions of CPAN modules may break sshnuke.pl
A2: Install Perl & tar zxf my_perllib.tgz
Possibly overwriting existing modules; not cross-platform at all
A3: Use the executable generated by perlcc sshnuke.pl
Impossible to debug; perlcc usually does not work anyway

Chatbot::Alpha::Tutorial is a beginners guide to Chatbot::Alpha 2.x.

INTRODUCTION

What is Chatbot::Alpha?

Chatbot::Alpha is a Perl module for reading and processing Alpha code. Alpha code is a command-driven response language, primarily used for chatterbots.

The language format is quite simple: its a line-by-line language. The first character is the command, followed by the commands data. The simplest of all Alpha replies is the standard one-way question and answer:

+ hello bot
- Hello human.

Alpha Commands Overview

Here are all the commands supported by Chatbot::Alpha:
+ (Plus)

The + symbol is the basis of all your replies. Its the trigger--that is, what the user says to activate that reply. In most cases this command comes first in a reply, followed by supporting commands that tell the bot what to do next.

- (Minus)

The - command has many purposes. In the example above, a single +TRIGGER and a single -REPLY will give you a one-way question-answer case. If you use multiple -REPLYs under one +TRIGGER, then they will become random responses. On *CONDITIONS, the -REPLYs will be called when no condition returns true. On &HOLDERS, the -REPLY is the first thing the bot sends. And the list goes on... well get into the many uses for -REPLY later.

% (Percent)

The % command is for "that" emulation. If youve worked with AIML youll know what that refers to. Its there to help take the A.D.D. syndrome out of your bots. You can make specific replies based on what the bot last said. Like if the bot asks "Do you have any pets?" and the user says "yes", the bot can ask "What kind of pets?" instead of a generic reply to "yes". Youll learn all about this in the tutorial later.

^ (Carat)

The ^ command is to continue from your last -REPLY. For example, if your reply is very long and you want to break it down a few lines in the reply file (as not to have a horizontal scrollbar and be hard to read), this is the command to use. The ^CONTINUE command will adds its data to the last -REPLY you used under the +TRIGGER.

@ (At)

The @ command is for a redirection. Alpha triggers are "dead-on", meaning "hello|hey" is literally "hello|hey", not "hello OR hey". So when you want one to point to the other, use the @REDIRECT command.

* (Star)

The * is for conditionals. Youll learn about these later as well.

& (Amperstand)

This is for simple conversation holders. Emphasis is on the word "simple." They dont always work, so youd use %THAT if it was really important. The &HOLDER command is slowly becoming deprecated.

# (Pound)

The # command is for executing Perl codes within your reply set. Sometimes Alpha just cant handle the complex tasks you have in mind, and this can fill in all the blanks (assuming youre fluent with Perl anyway).

/ (Slash)

This is comment data, not processed within Chatbot::Alpha.
LessThan and GreaterThan

The > and < are labels. Right now theyre used only for topics.

Apache::PAR::tutorial is a Perl module with information on getting Apache::PAR up and running.

Apache::PAR is a framework for including Perl ARchive files in a mod_perl (1.x or 2.x) environment. It allows an author to package up a web application, including configuration, static files, Perl modules, and Registry and PerlRun scripts to include in a single file. This archive can then be moved to other locations on the same system or distributed and loaded with a single set of configuration options in the Apache configuration.

These modules are based on PAR.pm by Autrijus Tang and Archive::Zip by Ned Konz as well as the mod_perl modules. They extend the concept of PAR files to mod_perl, similar to how WAR archives work for Java. An archive (which is really a zip file), contains one or more elements which can be served to clients making requests to an Apache web server. Scripts, modules, and static content should then be able to be served from within the .par archive without modifications.

For the package developer

For the package developer, Apache::PAR allows for easy package management, which frees the author from the task of creating a full Perl package. Apache::PAR allows the package developer to set the required Apache configuration directly in a package which greatly simplifies the install process for the end user and gives the the developer the ability to assign URLs which remain the same on all systems that the package is installed on. It is possible to decompress the contents of the PAR file during startup, which allows the use of code which relies on outside content (templating systems, etc)

For the package user

Once Apache::PAR is installed, it can be configured in an Apache configuration file with as little as two lines. Once setup, to add a new .par package to the system a user only has to place the package in the directory specified in the Apache configuration and restart Apache. All other configuration needs are provided by the module itself.

Gantry::Docs::Tutorial is a Perl module for The Gantry Tutorial.

Gantry is a mature web framework, released in late 2005 onto an unsuspecting world. For more information on the framework, its features and history, see Gantry::Docs::About.
Here we will explore the basic workings of Gantry by constructing a very simple application. Dont let the simplicity of this example fool you -- this framework has extreme flexibility in delivering applications with web and scripted components. The example in this document is only to get you started.

This document begins by describing a simple one-table management application. It walks through the process of building the application. Then, it shows a tool -- called Bigtop -- which can be used to build the application from a relatively small configuration file. Finally, it shows how to add another table and regenerate the app via Bigtop.

Template::Tutorial are template toolkit tutorials.

This section includes tutorials on using the Template Toolkit. Subjects currently include an general overview of the Template Toolkit, showing users how to get quickly up to speed building web content, and a tutorial on generating and using data files, with particular reference to XML.

Template::Tutorial::Web

Generating Web Content Using the Template Toolkit

This tutorial provides an introduction to the Template Toolkit and a "quick start" guide to getting up to speed. Its primarily focus is on using the Template Toolkit to build web content and it covers 4 basic areas: using tpage and ttree; using the Template.pm module in CGI scripts; writing Apache/mod_perl handlers; and extending the toolkit by writing plugins.

Template::Tutorial::Datafile

Creating Data Output Files Using the Template Toolkit

This tutorial gives an overview of the Template Toolkit, showing in particular how to use it to read and write data files in various different formats and styles. It was written by Dave Cross and first appeared as a lead article at http://www.perl.com/ earlier in the year (2001).