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Linux

Optimizing Desktop Performance, Part I

Post date: May 16, 2005, 23:05 Category: Optimizing Views: 4491 Comments
Tutorial quote: If you have complained about the speed of OpenOffice.org or Firefox or about the amount of time Linux takes to boot up, this set of optimizations should change your perception. Linux can boot up quickly, the word processor can spring open and the browser can fly. So, let's make these adjustments so your computer can fly.
Debian

Setting Up A PXE Install Server For Multiple Linux Distributions On Debian Lenny

Post date: May 26, 2009, 10:05 Category: Miscellaneous Views: 7981 Comments
Tutorial quote: This tutorial shows how to set up a PXE (short for preboot execution environment) install server on Debian Lenny. A PXE install server allows your client computers to boot and install a Linux distribution over the network, without the need of burning Linux iso images onto a CD/DVD, boot floppy images, etc. This is handy if your client computers don't have CD or floppy drives, or if you want to set up multiple computers at the same time (e.g. in a large enterprise), or simply because you want to save the money for the CDs/DVDs. In this article I show how to configure a PXE server that allows you to boot multiple distributions (i386 and x86_64): Debian Lenny, Ubuntu 9.04, Fedora 10, CentOS 5.3, OpenSuSE 11.1, and Mandriva 2009.1.
Unix+clones

How To Set Up Database Replication In MySQL

Post date: December 14, 2005, 19:12 Category: Software Views: 4711 Comments
Tutorial quote: This tutorial describes how to set up database replication in MySQL. MySQL replication allows you to have an exact copy of a database from a master server on another server (slave), and all updates to the database on the master server are immediately replicated to the database on the slave server so that both databases are in sync. This is not a backup policy because an accidentally issued DELETE command will also be carried out on the slave; but replication can help protect against hardware failures though.

In this tutorial I will show how to replicate the database exampledb from the master with the IP address 192.168.0.100 to a slave. Both systems (master and slave) are running Debian Sarge; however, the configuration should apply to almost all distributions with little or no modification.
Ubuntu

VBoxHeadless - Running Virtual Machines With VirtualBox 3.1 On A Headless Ubuntu 9.10 Server

Post date: February 2, 2010, 13:02 Category: Installing Views: 4088 Comments
Tutorial quote: This guide explains how you can run virtual machines with Sun VirtualBox 3.1 on a headless Ubuntu 9.10 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.
Linux

Automatically Scan Uploaded Files For Viruses With php-clamavlib

Post date: January 14, 2007, 21:01 Category: Security Views: 5166 Comments
Tutorial quote: This guide describes how you can automatically scan files uploaded by users through a web form on your server using PHP and ClamAV. That way you can make sure that your upload form will not be abused to distribute malware. To glue PHP and ClamAV, we install the package php5-clamavlib/php4-clamavlib which is rather undocumented at this time. That package is available for Debian Etch and Sid and also for Ubuntu Dapper Drake and Edgy Eft.
Debian

Splitting updatedb into daily and weekly

Post date: April 21, 2006, 12:04 Category: System Views: 3238 Comments
Tutorial quote: We all appreciate the locate command when we are such in a hurry we cannot afford a full and in-elegant find. What we like a little less, though, is the updatedb script consuming up all our disk bandwidth at each boot, summoned by anacron.

Of course, this is only the case if you are running a "desktop" machine: since you turn it on when you need to do some work, then you long for a way to shorten the period of reduced usability forced by updatedb.

Inversely, if you run a server that never goes down, and you successfully schedule your updatedb tasks late at night, then this article is not for you.
CentOS

Virtualization With KVM On A CentOS 6.0 Server

Post date: August 28, 2011, 17:08 Category: Installing Views: 5745 Comments
Tutorial quote: This guide explains how you can install and use KVM for creating and running virtual machines on a CentOS 6.0 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
OpenSUSE

Virtualization With KVM On An OpenSUSE 11.4 Server

Post date: April 21, 2011, 11:04 Category: Installing Views: 5182 Comments
Tutorial quote: This guide explains how you can install and use KVM for creating and running virtual machines on an OpenSUSE 11.4 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
OpenSUSE

Virtualization With KVM On An OpenSUSE 11.3 Server

Post date: January 6, 2011, 12:01 Category: Installing Views: 3388 Comments
Tutorial quote: This guide explains how you can install and use KVM for creating and running virtual machines on an OpenSUSE 11.3 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
Fedora

Virtualization With KVM On A Fedora 10 Server

Post date: March 22, 2009, 13:03 Category: Miscellaneous Views: 3670 Comments
Tutorial quote: This guide explains how you can install and use KVM for creating and running virtual machines on a Fedora 10 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
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