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CentOS

Virtual Users/Domains With Postfix, Courier, MySQL, SquirrelMail (CentOS 5.3)

Post date: May 14, 2009, 11:05 Category: Installing Views: 5338 Comments
Tutorial quote: This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database used by Postfix.
CentOS

How To Monitor A System With Sysstat On Centos 4.3

Post date: August 29, 2006, 15:08 Category: System Views: 7102 Comments
Tutorial quote: A common task for System Administrators is to monitor and care for a server. That's fairly easy to do at a moment's notice, but how to keep a record of this information over time? One way to monitor your server is to use the Sysstat package.

Sysstat is actually a collection of utilities designed to collect information about the performance of a linux installation, and record them over time.

It's fairly easy to install too, since it is included as a package on many distributions.
Fedora

Automatic And Up-To-Date Fedora 9 Installations With Kickstart And Novi

Post date: October 30, 2008, 12:10 Category: Miscellaneous Views: 4141 Comments
Tutorial quote: Kickstart allows you to do automatic Fedora/RedHat/CentOS installations. This is useful and time-saving if you have to deploy tens or hundreds of similar systems (e.g. workstations). Kickstart reads the installation settings from a Kickstart configuration file. The problem with Kickstart is that it usually uses the distribution's packages from the time the distribution was released, i.e., it does not consider updates which means you would have to update each system manually after the Kickstart installation. This guide explains how you can do up-to-date Kickstart installations with the help of a tool called novi.
CentOS

How To Install Qmailtoaster (CentOS 5.3)

Post date: June 19, 2009, 10:06 Category: Installing Views: 8524 Comments
Tutorial quote: Qmailtoaster is a project that aims to make the installation of Qmail onto RPM based systems a snap. All of the packages are distributed in source RPMs so building the packages for your particular distro and architecture is as easy as running a script or a simple command for each package. The RPMs have all of the needed and commonly asked for patches included so you can have a mail server up and running in about an hour. When it's all complete, you'll have a full Qmail mail server installation ready for just about anything. I personally run Qmailtoaster servers for other companies and ISPs who have tens of thousands of users on their systems.
Debian

Supplying routing information using DHCP

Post date: December 10, 2006, 09:12 Category: Network Views: 3868 Comments
Tutorial quote: This article describes how to use DHCP to supply information about static routes to the clients on your network. You may want to do this if you have two or more local networks with routers between them. The DHCP software doesn't support this out-of-the-box, but it can be configured to do so without too much effort.
OpenSUSE

Ext4 support on OpenSuse 11.1

Post date: January 5, 2009, 10:01 Category: System Views: 4871 Comments
Tutorial quote: Kernel 2.6.28 Released

Torvald released the final version of Linux Kernel 2.6.28. It's not a big change since RC 9, but it finally appeared as final after lots of discussion on LKML whether to postpone the release or release earlier and make the merge window longer as the developers goes on long holidays.

Here's some summary of Kernel 2.6.28 (taken from KernelNewbies): Linux 2.6.28 adds the first version of Ext4 as a stable filesystem, the much-expected GPU memory manager which will be the foundation of a renewed graphic stack, support for Ultra Wide Band (Wireless USB, UWB-IP), memory management scalability and performance improvements, a boot tracer, disk shock protection, the phonet network protocol, support of SSD discard requests, transparent proxy support, several new network drivers, controlable IO CPU affinity, high-resolution poll()/select(), support of a minimal "dummy" policy in SELinux, tracing improvements, x86 x2APIC support, a fb driver for VIA UniChrome devices, Mitac Mio A701 ARM-based smartphone support, some new drivers, improved device support, and many other small improvements and fixes.
Debian

Running network services as a non-root user

Post date: April 20, 2006, 10:04 Category: Security Views: 4041 Comments
Tutorial quote: There are many times when it is convenient to allow non-root users to run services, or daemons, which bind to "privileged ports". There are several approaches to this problem each with its own set of pros and cons. Read on for a brief look at the most common approaches.
Debian

Remotely Manage Machines Using VNC

Post date: November 1, 2006, 23:11 Category: Software Views: 4299 Comments
Tutorial quote: VNC stands for Virtual Network Computing. It is, in essence, a remote display system which allows you to view a computing `desktop’ environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures.
Debian

MRTG Configuration in Debian Linux

Post date: April 4, 2006, 20:04 Category: Installing Views: 4201 Comments
Tutorial quote: The Multi Router Traffic Grapher (MRTG) is a tool to monitor the traffic load on network links. MRTG generates HTML pages containing PNG images which provide a LIVE visual representation of this traffic.
Solaris

Configuring Apache

Post date: April 13, 2005, 05:04 Category: Network Views: 5026 Comments
Tutorial quote: Apache can respond to browser requests from machines on your local network (i.e. an "Intranet" Web server) or from the Internet. The installation of the Solaris OS installed and set up most of the necessary Apache files. As a result, if you want to use your system as a Web server you only need to modify one file.
Web-based applications and online marketing solutions - LumoLink