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500Mbps over copper wiring
The article says that it takes 6 copper lines bound together. But it does not say if that is 6 pair or only 3 pair. I am pretty sure that this will not be coming to my house any time soon, but the underlining technology is definitely heading in the right direction.
"Telecom equipment maker Ericsson says the unthinkable is now the possible: 500Mbps transmission speeds over ordinary copper wiring. Looking at the details, though, it's not clear that the news will give Verizon any reason to rethink its hugely expensive fiber-to-the-home strategy... or that such speeds will be coming to a DSL line near you anytime soon."
New life for twisted-pair? 500Mbps over copper wiring

( Permalink: 500Mbps over copper wiring      Submitted by Noel Wed Mar 18, 2009 )

Backing up MySQL
Good overview of a bunch of different ways to back up your MySQL databases.
"There are several ways to backup MySQL data. In this article weíll look at how to backup your databases using different methods, we will also learn how to achieve an automatic backup solution to make the process easier. Starting with the mysqldump utility that comes with MySQL, we will review several examples using mysqldump, including the backup of your database to a file, another server, and even a compressed gzip file and send it to your email."
10 Ways to Automatically & Manually Backup MySQL Database

( Permalink: Backing up MySQL      Submitted by Noel Wed Mar 18, 2009 )

Finding rootfs during boot
As a Linux administrator, you may encounter rootfs errors like cannot mount rootfs and kernel panic when you try to reboot a server after attaching volumes from external storage or even after installing a new Linux operating system. This article outlines the Linux booting process on an x86 platform, shows why this problem happens, and offers four tips to avoid rootfs errors or fix it. This is a straightforward approach to finding a quick solution that can help you avoid a lot of grief.

( Permalink: Finding rootfs during boot      Submitted by Anonymous Tue Mar 17, 2009 )

Lithium battery breakthrough
Yes friends we now can have friggin laser guns mounted on sharks! Or even a fast charging battery for our electronic toys and tools. This is the sort of thing that gives me faith in our future (at least in the longer term). Great article on the new batteries from Ars. I liked that they did the math on how much power it would take to actually charge a battery that fast. Good job.
"The results are pretty astonishing. At low discharge rates, a cell prepared from this material discharges completely to its theoretical limit (~166mAh/g). As the authors put it, "Capacity retention of the material is superior." Running it through 50 charge/discharge cycles revealed no significant change in the total capacity of the battery."
Lithium breakthrough could charge batteries in 10 seconds

( Permalink: Lithium battery breakthrough      Submitted by Noel Mon Mar 16, 2009 )

Vim Cheatsheet Revisited
Nice cheat sheet for vim. The author also has a nice MySQL Reference.
"Cheat sheets like that work best, when you can print them, and hang them on the wall of your cubicle for quick access. Yes, you could have my page bookmarked or always open somewhere in the background but it is usually easier to have a paper copy. So I decided to make a nice, printable version of that cheat sheet that would fit on a single sheet of paper. Here is the result:"
Vim Cheatsheet Revisited

( Permalink: Vim Cheatsheet Revisited      Submitted by Noel Fri Mar 13, 2009 )

10 tips from Benjamin Franklin for System Admins
Benjamin Franklin: author and printer, satirist, political theorist, politician, scientist, inventor, civic activist, statesman, diplomat, Freemason Grand Master... and would-be UNIX systems administrator? Yes, 200 years or so before the birth of UNIX, Franklin scribed sage advice to keep systems humming. Here are 10 of Franklin's more notable tips and how they can be applied to advanced system administraion.

( Permalink: 10 tips from Benjamin Franklin for System Admins      Submitted by Anonymous Thu Mar 12, 2009 )

Networking Analytics Example
Analytics looks amazing. Most of the time when I have run into a problem like this all I can do it look at what you can see from the host side of things, not on the storage side.

Every vendor should include tools like this.

"... just setup a new Sun Storage 7410, and found a performance issue using Analytics. People have been asking for examples of Analytics in use, so I need to blog these as I find them. This one is regarding network throughput, and while simple - it demonstrates the value of high level data and some features of Analytics."
Networking Analytics Example

( Permalink: Networking Analytics Example      Submitted by Noel Wed Mar 11, 2009 )

Launch batches of self-configuring virtual machine
In this article, see how to develop an automatic virtual machine deployment solution that will help you deploy and activate batches of self-configuring virtual machines quickly and automatically. This approach will also let you run customized applications separately for each deployed virtual machine after system start.

(Not sure right now why I might want to do this. But man is it cool - Noel)

( Permalink: Launch batches of self-configuring virtual machine      Submitted by Anonymous Mon Mar 9, 2009 )

Inside the Mac Mini
Some more information about the new Mac Mini. Sounds pretty nice. Not to worried about the soldered on processor. I like the video memory bump. Been one of my sticking points on the older ones. Video just not good enough in the old ones.
"First is the shiny new Core 2 Duo processor, which happens to be soldered to the logic board. This, of course, means you won't be able to do processor upgrades down the roadówe're not sure how much of a selling point this was in previous incarnations, but it is totally out of the picture now. Second is the fact that, if you put 2GB of RAM in a new mini, the video memory will bump up to 256MB. While still shared memory, it is better than the rather paltry 128MB alternative. Last, but certainly not least, is the fact that if you remove the optical drive, the mini can now fit a second hard drive. This is surely a point of interest for those of you using the mini for a server or HTPC; the potential for extra hard drive space may be the reason you will want to upgrade."
More Mac mini details: soldered processor, drive upgrades

( Permalink: Inside the Mac Mini      Submitted by Noel Mon Mar 9, 2009 )

Linux cluster monitoring with Gangia
This article will walk you through Installing and configuring the basic Ganglia (a scalable, distributed monitoring system for high-performance clusters) setup. it will also show you how to use the Python modules to extend functionality with IPMI, and how to use Ganglia host spoofing to monitor IPMI. The goal is not only to set up a Ganglia high-performance Linux cluster monitoring system, but also to add more monitoring capability by writing simple Ganglia plug-ins.

( Permalink: Linux cluster monitoring with Gangia      Submitted by Anonymous Fri Mar 6, 2009 )

Hands-on: fat-free Xfce 4.6
I am a big fan of light weight X desktops. They can often change the experience in a very good way. Have not used this one but it looks pretty nice. And Ars always does a good job with their reviews.
"GNOME and KDE reign supreme on the Linux desktop, but there are many lesser-known desktop environments that are increasingly popular among users who are looking for lightweight alternatives that deliver more streamlined interfaces and a functional user experience with less overhead. The Xfce project, which produces one of the most polished lightweight desktop environments, recently announced the release of version 4.6."
Hands-on: fat-free Xfce 4.6

( Permalink: Hands-on: fat-free Xfce 4.6      Submitted by Noel Fri Mar 6, 2009 )

Add Twitter-like functions to any application
Learn how to use PHP to add a Twitter-like interface to your applications. Specifically, we show you how to allow users to add posts, disseminate those posts to other users who want to receive them, and allow users to choose to follow the posts of other users. With any luck, you can take what you will learn here, add it to your application, and tailor it to your needs.

( Permalink: Add Twitter-like functions to any application      Submitted by Anonymous Thu Mar 5, 2009 )

I think it is cool looking also. Not sure I could justify running a Java app to graphically watch disk usage all the time. Well not unless I was trying to troubleshoot a problem.
"Cool new gadget with cool graphics. Am I becoming less jaded, do I just have too much CPU power at my disposal? Too much ram, after all I have 4 AMD cores and 10GB of ram spread between the two machines that sit in my living room?"

( Permalink: http://uadmin.blogspot.com/2009/02/jkstat-rocks.ht      Submitted by Noel Thu Mar 5, 2009 )

10 steps to UNIX nirvana
This article provides 10 effective methods that can increase your productivity. The examples in this article use tcsh version 6 as a reference, but the ideas are portable to all variants of UNIX shells. It also refers to several open source tools available for the UNIX platform.

( Permalink: 10 steps to UNIX nirvana      Submitted by Anonymous Wed Mar 4, 2009 )

Dealing with the dovecot X-UID bug
I recently got bit by a bug in older versions of dovecot which inserts invalid X-UID headers in mbox mail files. Here's a writeup of the steps I took to solve it, including a shell script to help automate the process.

( Permalink: Dealing with the dovecot X-UID bug      Submitted by Phil Hollenback Wed Mar 4, 2009 )

Featured Articles:
Unix and Linux Podcasting Guide

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Weakness and Security

Essential CVS

Spring Into Technical Writing

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Older News

Overview of the Debian package system
(Tue Mar 3, 2009)

Best Home Server Software
(Mon Mar 2, 2009)

Tour the Linux generic SCSI driver
(Mon Mar 2, 2009)

Marvell's Plug Computer
(Mon Mar 2, 2009)

Encrypted USB Drives
(Fri Feb 27, 2009)

Manage blogs on AIX with open source CMS tools
(Thu Feb 26, 2009)

Build a faster and more secure UNIX file system
(Thu Feb 26, 2009)

Upgrading MySQL with Replication
(Thu Feb 26, 2009)

Serious considerations before upgrading to PHP 5.3
(Wed Feb 25, 2009)

Moving data from MS SQL to MySQL
(Wed Feb 25, 2009)

Anatomy of ext4
(Tue Feb 24, 2009)

(Tue Feb 24, 2009)

The power of 3's
(Mon Feb 23, 2009)

pkgwatch -- A Package Management Wrapper
(Fri Feb 20, 2009)

Need Inodes?
(Wed Feb 18, 2009)

SELinux and Smack modules for Linux containers
(Tue Feb 17, 2009)

Perform uniform mounting with generic NFS
(Mon Feb 16, 2009)

Five network tricks for Linux on S/390 systems
(Mon Feb 16, 2009)

Air and KDE 4.3.
(Mon Feb 16, 2009)

Book Review: A Practical Guide to Ubuntu Linux
(Fri Feb 13, 2009)

OpenSolaris Bible sample chapters
(Thu Feb 12, 2009)

Multiple shell management with GNU Screen
(Thu Feb 12, 2009)

KDE 4.2 officially released
(Thu Feb 12, 2009)

Linux can rule cloud computing
(Wed Feb 11, 2009)

Converting your Linksys router to Linux
(Wed Feb 11, 2009)

Five Questions With Michael Widenius
(Wed Feb 11, 2009)

Optimizing iSCSI and VMware
(Tue Feb 10, 2009)

Creating and using the new Phar archives in PHP V5
(Mon Feb 9, 2009)

How to use LVM to migrate filesystems to a RAID
(Mon Feb 9, 2009)

ZFS: Transaction Groups & Disk Performance
(Mon Feb 9, 2009)

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