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Installing Elgg On An ISPConfig 3 System
Elgg is an open-source web application written in PHP that allows you to run a social-networking site. This tutorial shows how you can install it on a server running ISPconfig 3.
Blocking IP Addresses Of Any Country With iptables
This article explains how you can block IP addresses of any country with the help of iptables.
IP Address Geolocation From MySQL
In this short tutorial I will use a local MySQL database to do IP addresses geolocation.
pkgwatch -- A Package Management Wrapper
In the past I was trying many different linux distros. Each has its own package management systems: debian has apt, mandrake has urpmi, yellowdog has an apt front-end for rpm, suse has yast... While they all are quite similar and not difficult to use, I found that I often made mistakes because I often forgot which system I was using and the exact commands on that system. Another issue is that I wish I could keep track how I installed/removed those packages. So I wrote a simple wrapper for various package management systems.
Creating USB Startup Disks From Various Linux Distributions With UNetbootin
This guide shows how you can create USB startup disks (on your USB flash drive) from various Linux distributions with UNetbootin. This is useful if you want to install a Linux distribution on a computer that has no CD/DVD drive.
Cloning Linux Systems With CloneZilla Server Edition (CloneZilla SE)
This tutorial shows how you can clone Linux systems with CloneZilla SE. This is useful for copying one Linux installation to multiple computers without losing much time, e.g. in a classroom, or also for creating an image-based backup of a system. I will install CloneZilla SE on a Debian Etch server in this tutorial. The systems that you want to clone can use whatever Linux distribution you prefer.
How To Resize LVM Software RAID1 Partitions (Shrink & Grow)
This article describes how you can shrink and grow existing software RAID1 partitions with LVM on top. I have tested this with logical volumes that use ext3 as the file system. I will describe this procedure for an intact RAID array and also a degraded RAID array.
How To Configure Software RAID To Send An Email When Something's Wrong With RAID
This short guide explains how you can configure software RAID to send you an email when something's wrong with RAID, for example if a hard drive fails. I've tested this on Debian Etch, but it should apply to all other distributions with minor adjustments to paths, etc.
Reducing Disk IO By Mounting Partitions With noatime
Linux has a special mount option for file systems called noatime. If this option is set for a file system in /etc/fstab, then reading accesses will no longer cause the atime information (last access time - don't mix this up with the last modified time - if a file is changed, the modification date will still be set) that is associated with a file to be updated (in reverse this means that if noatime is not set, each read access will also result in a write operation). Therefore, using noatime can lead to significant performance gains.
How To Resize RAID Partitions (Shrink & Grow) (Software RAID)
This article describes how you can shrink and grow existing software RAID partitions. I have tested this with non-LVM RAID1 partitions that use ext3 as the file system. I will describe this procedure for an intact RAID array and also a degraded RAID array.
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