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Linux Configure Multiple Network Profiles on Linux
Post date: April 12, 2005, 22:04 Category: Network Views: 30
Tutorial quote: Mobile Linux users face some interesting (OK, vexing) challenges when they want to plug into different networks. Any Linux system will easily support all manner of networking profiles--dialup, ISDN, Ethernet, wireless--the tricky bit is configuration. Manually re-configuring a PC for every connection is low on most users' lists of "fun things to do." You can be an ace scripting guru and fiddle up something yourself, or you can find a nice ready-made utility to do the work for you. Unfortunately, I have not found a universal utility to do this. However, there are a lot of utilities specific to various distributions, and an assortment of other utilities.
Linux Building a Linux Cluster, Part 2
Post date: April 17, 2005, 23:04 Category: Network Views: 48
Tutorial quote: In this installment, we consider the what of cluster building: the hardware and software components that make up a Linux cluster, and some ways to think about integrating them into a solution for your environment.
Linux Secure your Server with iptables
Post date: April 20, 2005, 07:04 Category: Security Views: 96
Tutorial quote: Central to securing a Linux server that's connected to the Internet is having a good firewall and specific policies in place. Numerous options exist for those considering firewalls for Linux, however, a free and included solution is onoffer through Netfilter and iptables.
Linux Monitoring and Managing Linux Software RAID
Post date: April 15, 2005, 19:04 Category: System Views: 56
Tutorial quote: Systems administrators managing a data center face numerous challenges to achieve required availability and uptime. Two of the main challenges are shrinking budgets (for hardware, software, and staffing) and short deadlines in which to deliver solutions. The Linux community has developed kernel support for software RAID (Redundant Array of Inexpensive Disks) to help meet those challenges. Software RAID, properly implemented, can eliminate system downtime caused by disk drive errors. The source code to the Linux kernel, the RAID modules, and the raidtools package are available at minimal cost under the GNU Public License. The interface is well documented and comprehensible to a moderately experienced Linux systems administrator.

In this article, I'll provide an overview of the software RAID implementation in the Linux 2.4.X kernel. I will describe the creation and activation of software RAID devices as well as the management of active RAID devices. Finally, I will discuss some procedures for recovering from a failed disk unit.
SuSe Correct Multimedia Support in SUSE Linux 9.2
Post date: April 12, 2005, 21:04 Category: Multimedia Views: 109
Tutorial quote: SUSE Linux is one of the better desktop Linux distributions on the market today, providing a functional and aesthetically pleasing environment for the new Linux user as well as seasoned veterans. On thing that puzzles many users is the lack of proper multimedia support in SUSE. The developers have basically crippled it from playing virtually all types of multimedia content that's common on the Internet today. This can be a frustrating dilema for new users, so I have written a short HOWTO to help you get everything in order on your new desktop.

It should be noted that you don't necessarily need to install apt to fix the multimedia problem on SUSE, but it's probably the most beneficial way to get it done. You can easily remove the offending packages and install new ones not provided by SUSE, but by using apt, you'll get the benefit of having a much larger package base available to you... something that SUSE has suffered from for a very long time. With or without apt, let's get things going with this HOWTO.
Linux The Linux /proc Filesystem as a Programmers' Tool
Post date: June 22, 2005, 05:06 Category: Programming Views: 137
Tutorial quote: My entry into systems programming was guided by my desire to understand further the operating systems I was working with daily as a contract UNIX and, later, Linux system administrator. The result of this was ifchk, a packet sniffer detector I wrote in C and released in June of 2003. ifchk initially was written under IRIX and then ported to Linux, mostly under the 2.4 kernel. The current ifchk revision, beta 4, recently was released and beta 5 is on the way.

My work on ifchk has allowed me to examine programmatically several areas of operating system functionality. Examples include the Linux netlink(7) and rtnetlink(7) facilities, device control--that is, network interfaces--via ioctl(2), signals and proc, the process filesystem. Proc and its ability to display a wide array of data concerning the runtime state of a system are the focus of our discussion here.
Debian Using Samba on Debian Linux
Post date: February 2, 2006, 20:02 Category: Network Views: 58
Tutorial quote: This article will show you how to install Samba 3.X on Debian Linux 3.1 (Sarge) and make it authenticate against a Windows server running Active Directory. It is not intended on replacing the actual official Samba 3 manual - which is a quite good read anyway.
Linux Building a Linux supercomputer using SSH and PVM
Post date: April 11, 2006, 17:04 Category: Network Views: 26
Tutorial quote: If you have a couple of old Linux boxes sitting around, then you've got the makings of a supercomputer. Dust them off, install Secure Shell (SSH) and Parallel Virtual Machine (PVM), and start your complex algorithms.
Linux Gnu Queue: Linux Clustering Made Easy
Post date: December 22, 2005, 14:12 Category: System Views: 85
Tutorial quote: GNU Queue makes it easy to cluster Linux workstations. If you already know how to control jobs running on your local machine, you already know how to control remote jobs using GNU Queue. You don't even need special privileges to install and run GNU Queue on your cluster--anyone can do it. Once you've discovered how incredibly easy it is to cluster Linux environments with GNU Queue, you'll wonder why organizations continue to spend so much money on comparatively hard-to-cluster Windows NT environments.
Fedora+Core Building a Linux cluster on a budget
Post date: November 18, 2005, 14:11 Category: Network Views: 140
Tutorial quote: So you need a lot of computing power but don't want to spend tens of thousands of dollars on a commercial cluster? Or maybe you just have a lot of machines sitting idle that you would like to put to good use? You can build a powerful and scalable Linux cluster using only free software and off-the-shelf components. Here's how.