What's the first thing that you do once you've logged onto Linux? Is it to manually start up a processes such as Apache or MySQL, or even start your network connection? Or do you have to stop applications that have started up without your telling them to, and which are overloading your machine? If you have unwanted processes starting at boot time, or find yourself starting necessary services manually, let's make your life a little bit easier by introducing you the world of Linux services.
Astlinux is a bundled distribution of the Asterisk open source iPBX private branch exchange (PBX) software and a Linux operating system. Originally developed by Mark Spencer at Digium, Asterisk is the leading open source software in the telephony/VoIP space. Asterisk excels at combining traditional TDM telephony capability - provided through hardware from Digium and others - with VOIP services. These include call routing, media gateway, media server and SIP signaling capabilities.
Cheat Knoppix 4 -- Part 2. Knoppix Performance Improvement Cheats
Thursday, January 12 2006 @ 09:54 AM CST Contributed by: Anonymous
Learn how to speed up Knoppix and free up a CD drive. MozillaQuest Magazine (MozillaQuest.Com) reports: "Today, in Part 2, this Knoppix tutorial shows you how to use Knoppix cheats to speed up Live Knoppix. And it shows you how to free the CD drive or DVD drive that you use to run Live Knoppix too . . . One way to perk the performance of your live CD/DVD version of Knoppix Linux is to move the CD image to a USB Flash drive (USB Key). Luckily, there are some nice Knoppix cheats to do that . . . A side benefit of moving the CD image to a USB Flash drive (USB Key) is that it also frees the CD/DVD drive in which you placed the Live Knoppix CD or DVD."
Tweaking Knoppix is easy with cheat codes. Learn how to use Knoppix cheat codes. MozillaQuest Magazine (MozillaQuest.Com) reports: "Live Knoppix is very nice Desktop Linux." But it can use some tweaks, which are easy to do using Knoppix cheat codes. For example, "Knoppix uses Open Sound System (OSS) drivers by default . . . Using the ALSA drivers [and running "the alsaconf configuration procedure"] took care of the audio problem. Moreover, dropping the default OSS drivers and changing to the ALSA drivers was easy to do using a Knoppix cheat code. . . . The Knoppix cheat-codes discussions and tutorials in this article should be applicable to most any computer with which you can use the Knoppix live Linux CD or live Linux DVD."
Linux has a number of useful bandwidth monitoring and management programs. A quick search on Freshmeat.net for bandwidth returns a number of applications. However, if all you need is a basic overview of your total bandwidth usage, iptables is all you really need -- and it's already installed if you're using a Linux distribution based on the 2.4.x or 2.6.x kernels.
As a system administrator, there are two ways you can interact with users: force them to follow the rules or encourage them with tools and guidelines. I prefer the second approach, as I think people generally want to do the right thing. Also, if people don't follow the rules at your company, that is a management problem, not a computer problem. Therefore, I prefer to concentrate my attention on helpful tools and scripts, which is exactly what I did recently to solve a typical system administrator problem.
Although modern desktop Linux distributions pride themselves in minimizing the need for users to resort to command-line activities, there are times when a visit to a shell prompt can come in handy. To this end, a concise guide to Linux shell scripts is now available from the LinuxHelp blog.
For years, the goal of creating a truly responsive Web application was hampered by one simple fact of Web development: To change the information on part of a page, a user must reload the entire page. Not anymore. Thanks to asynchronous JavaScript and XML (Ajax), we can now request new content from the server and change just part of a page. This tutorial explains how to use Ajax with PHP and introduces the Simple Ajax Toolkit (Sajax), a tool written in PHP that lets you integrate server-side PHP with JavaScript that makes this work.
This tutorial describes how to do automated server backups with the tool rdiff-backup. rdiff-backup lets you make backups over a network using SSH so that the data transfer is encrypted. The use of SSH makes rdiff-backup very secure because noone can read the data that is being transferred. rdiff-backup makes incremental backups, thus saving bandwidth.
This document describes how to install a mail server based on Postfix 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 Postfix uses.
