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ADG: Automatic Drawing Generation The ADG library (Automatic Drawing Generation) is a set of functions focused on automating the drawing of mechanical parts. It is not a CAD system but a library providing a non-interactive canvas where you can put common CAD entities such as paths, xatches and quotes, to create your technical drawings.

AIDE The Advanced Intrusion Detection Environment does everything Tripwire (tm) does and more. The program creates a database from the regular expression rules that it finds from the config file. Once this database is initialized you can use it to verify the integrity of the files. It has several message digest algorithms that are used to check the integrity of the file. More algorithms can be added with relative ease. All of the usual file attributes can also be chacked for inconsistencies. It can read databases from older or newer versions.

AKFQuiz 'AKFQuiz' lets you make your own quiz games, learning exercises or psychotests. These can be used with grquiz in a graphical environment, or with scrquiz on the text-console. There is also a line oriented variant, linequiz, which can be used as a backend. A CGI-variant, cgiquiz, can be installed on a Web server to offer exercises via Internet or a local network. Or you can use mkquiz, which generates an HTML-file for to use with JavaScript. Those can then be published using any web-space provider.

ALSA Patch Bay This is a GUI patchbay for the the ALSA seq sequencer api and the JACK audio API. It can use FLTK 1.1 or GTKmm 2.0.0. If you have both installed, you can specify which to use with the --ui command line option. It can use FLTK or GTKmm for the interface and take advantage LASH session management.

ALSA tools The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the GNU/Linux operating system. ALSA has the following significant features:

• Efficient support for all types of audio interfaces, from consumer sound cards to professional multichannel audio interfaces.
• Fully modularized sound drivers.
• SMP and thread-safe design.
• User space library (alsa-lib) to simplify application programming and provide higher level functionality.
• Support for the older Open Sound System (OSS) API, providing binary compatibility for most OSS programs.

ALSA utilities The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the GNU/Linux operating system. ALSA has the following significant features:

• Efficient support for all types of audio interfaces, from consumer sound cards to professional multichannel audio interfaces.
• Fully modularized sound drivers.
• SMP and thread-safe design.
• User space library (alsa-lib) to simplify application programming and provide higher level functionality.
• Support for the older Open Sound System (OSS) API, providing binary compatibility for most OSS programs.

APing APing is the advanced ping program written in Python from scratch that can execute four type of ICMP probes :

• echo request
• address mask request
• timestamp request
• and information request

You can also change the TOS value in packets, retrieve the UTC time from a valid timestamp reply packet, or to change the TTL, even to trace the sent packets to understand better what's going on.

Aafigure ASCII art to image converter. ASCII art figures can be parsed and output as SVG, PNG, JPEG, PDF and more. This project provides a python package and a command line script.

Abook Abook is a text-based addressbook program specifically designed to use with mutt mail client (although it can also be used independently). It has import filters for mutt, pine, and the Netscape addressbook, and export filters for mutt, pine, the Netscape addressbook, HTML, elm, plain text, spruce, and the GnomeCard addressbook.

Acon Acon monitors one or more virtual consoles while running in the backgrounds. If it finds arabic letters, Acon will write them in the correct direction. You must be root to run it. The program has two modes of operation. The first is a left to right console, in which the default language is English. Use this when most of your document is in english. The second mode is a right to left console, in which the default language is Arabic. Use this when most of your document is in arabic.