PUBLIC MARKS with tags documentation & tutorial

This document requires Postfix version 2.0 or later. This document gives an overview of how Postfix can be used for hosting multiple Internet domains, both for final delivery on the machine itself and for the purpose of forwarding to destinations elsewhere. The text not only describes delivery mechanisms that are built into Postfix, but also gives pointers for using non-Postfix mail delivery software.

In this article you'll learn how to syndicate your own custom RSS feeds using PHP and MySQL. We'll first learn how to create two database tables and then how to retrieve data from them which will be formatted into an RSS feed. Here's an example of the completed RSS feed and a download link to the code. Let's start by taking a look at how to create the MySQL database tables.

Our intention is not to build a fail-safe system nor a HA-Linux. We are just using RAID-1 mirrored disks to make sure that the system can be restored easily if 1 disk crashes. The following has been tested only twice (hey, we've got other things to do). It did work for us, it might work for you. It might also make your rats go berserk or just blow your mind.

This is a quick tutorial on how to setup your Linux environment and VirtualBox, so that it can automatically create network interfaces and put them in bridge when the VM is launched.

Qui dit conventions dit accords. Une convention n’est pas une règle. Une règle c’est quelque chose d’obligatoire, une convention non. Mais ça peut engendrer des pénalités, dans notre contexte c’est une diminution de la productivité. Cependant la convention peut créer des obligations. C’est-à-dire qu’on dit : voilà cette chose elle est comme ça. Pourquoi ? Ben pourquoi pas ? On bâtit dessus et on avance. Et pourquoi ? Un seul mot, productivité.

SSH also has a wonderful feature called SSH Port Forwarding, sometimes called SSH Tunneling, which allows you to establish a secure SSH session and then tunnel arbitrary TCP connections through it. Tunnels can be created at any time, with almost no effort and no programming, which makes them very appealing. In this article we look at SSH Port Forwarding in detail, as it is a very useful but often misunderstood technology. SSH Port Forwarding can be used for secure communications in a myriad of different ways. Let's start with an example.

Pure CSS Scrollable Table with Fixed Header Using CSS to allow scrolling within a single HTML table

A RAID device is a Redundant Array of Independent Disks. The concept was developed in 1987 at UC Berkeley and involves the creation of a virtual disk from multiple small disks in order to deliver improved performance and reliability. There are many flavors of RAID and lots of variations in how to implement it. We detail here a specific instance we use: software RAID1 using IDE disks on a Dell PowerEdge box running Debian "sarge" loaded with grub, managed by mdadm, using the ext3 journaling file system.

The system is equipped with 2 similar hard disks (they do not have to be the same but it helps if they are at least similar). The first disk is attached to the primary IDE as master, it will be referenced as /dev/hda. The second disk is attached to the secondary IDE also as master, it will be referenced as /dev/hdc.

WEP was intended to provide comparable confidentiality to a traditional wired network (in particular it does not protect users of the network from each other), hence the name. Several serious weaknesses were identified by cryptanalysts — any WEP key can be cracked with readily available software in two minutes or less — and WEP was superseded by Wi-Fi Protected Access (WPA) in 2003, and then by the full IEEE 802.11i standard (also known as WPA2) in 2004. Despite the weaknesses, WEP provides a level of security that can deter casual snooping

The purpose of this document is to describe how to install OpenVPN server on an Ubuntu Linux system and have it utilize an Ethernet bridge to access your local network. Ethernet bridges essentially allow the operating system to treat multiple network interfaces as one combined port. When used with OpenVPN a bridge will allow you to easily connect external users to your internal network and have them receive all traffic as though they were locally connected. The alternative is to use OpenVPN with a route but that will not allow some forms of traffic through (such as multicast), multicast traffic is important to me as many games require multicast data.

Ce document explique comment mettre en place plusieurs types différents de RAID logiciel sur une plateforme Linux.

There is a great howto about installing Xen on Debian Unstable. It is really easy to do and it runs fine. Nevertheless, on production servers, that's not an optimal solution. Debian Unstable has too many updates and things change too often. On production machines, a Xen host system should be stable, secure and should not need much attention. That is where Sarge comes in. If you pull the Xen packages from backports and install them on Debian stable you've got the best of both worlds. Let's do so!

Ce document a pour but d'expliquer les rudiments de la sécurité d'une machine Linux placée dans un réseau local (typiquement une maison on un appartement), reliée à Internet. Il est tout particulièrement destiné aux utilisateurs néophytes, ou n'ayant pas ou peu de connaissance sur la sécurité informatique en général, et sous Linux en particulier.

Très bon référentiel de manuel pour toute sorte d'avions !

Heureux possesseur d'un appareil reflex numérique, et passionné de photographie, voila quelques temps que je me suis penché sur la meilleur façon d'organiser mon flux de travail sous linux. En effet, bien que Photoshop soit l'application propriétaire réputée la plus réclamée par les utilisateurs de Linux, l'OS au pingouin est en en réalité très bien équipé pour faire face a un flux de photographie numérique avancé. Dans ce billet, je vais tenter de présenter un flux de travail pour la photographie numérique, entièrement sous Ubuntu. Certains logiciels présentés ne sont pas libres, mais je présenterais les alternatives libres existantes.

"What is DJ-ing anyway ?" I'll start by saying it is not just chaining tracks together into one long continuous piece of music. How you mix your records, which records you mix and even the order in which you mix them can make or break an atmosphere. A DJ is a musician who is using music to make music. The turntables, mixer and records make up one of the most versatile and complex instruments imaginable. Still, this does not do credit to the most important thing about DJ-ing. The ultimate goal for a DJ is to create something magical with the audience, to make time stop, to create a natural high, or more down to earth, at least give the crowd a great time.

e shell par défaut sur de nombreux linux est bash. Il existe bien évidemment un bon nombre de raccourcis clavier pour vous faciliter la vie... une fois que vous arrivez à les retenir (et je sais comme c'est dur :D) ! Ici, je vous propose de passer en revue 13 d'entre eux qui vont vous être utiles au quotidien

Une incroyable collection de how-to en anglais concernant ubuntu, pour une utilisation un peu avancée.

Une incroyable collection de how-to en anglais concernant ubuntu, pour une utilisation un peu avancée.

BackupPC est un logiciel libre de sauvegardes informatiques publié sous licence GPL. Cet article va vous indiquer comment installer BackupPC, comment le configurer et comment configurer les machines clientes (Windows ou Linux).

Cette documentation a été réalisé avec une Debian Sarge 3.1

On a donc le charset ISO-8859-1 utilisé sur la machine qui fait tourner samba (à vous de spécifier le votre, en général ce sera celui là sur une installation en français), et sur les clients windows, on a la page de code 850 (pour la connaitre, taper chcp en ligne de commande sous windows).