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tcpdump fu

By Henry Van Styn | Dec 19, 2011

Packet capture is one of the most fundamental and powerful ways to do network analysis. You can learn virtually anything about what is going on within a network by intercepting and examining the raw data that crosses it. Modern network analysis tools are able to capture, interpret and describe this network traffic in a human-friendly manner. more>>

Linux Systems Capacity Planning

By L J Staff | Dec 16, 2011

This video is from our good friends at USENIX's recent LISA conference in Boston.

"Linux Systems Capacity Planning: Beyond RRD and top", by Rodrigo Campos more>>

Readers' Choice Awards 2011

By Shawn Powers | Dec 01, 2011

The votes are in, the tallies are counted, the hanging chads have been evaluated, and we have our winners. This year holds a few surprises, a couple dominant players and as much open source as you can handle. We don't encourage gambling here at Linux Journal, but if you had an office pool going for pizza money, it's officially too late to make your wager.

Lustre logo

The Lustre Distributed Filesystem

By Petros Koutoupis | Nov 28, 2011

There comes a time in a network or storage administrator's career when a large collection of storage volumes needs to be pooled together and distributed within a clustered or multiple client network, while maintaining high performance with little to no bottlenecks when accessing the same files. That is where Lustre comes into the picture. The Lustre more>>

book

Getting Help From Linux - Part 2 Info

By Jayson Broughton | Oct 11, 2011

Well here we are again, at part two of the 'Getting Help from Linux' series.  In this blog post I'll be talking about using Info to get help from Linux.  In my previous post I spoke about how Info came about, but just in case you missed it I'll give you another quick lesson.  Gnu more>>

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Tracking Server Uptimes

By Gene Liverman | Sep 08, 2011

Unlike some other OS's, Linux almost never has to reboot… or so I was told when I first started learning about it. To illustrate the point, my mentor introduced me to an app that he ran on all of his servers called uptimed. more>>

Lock Firefox Prefs

Lock Firefox 6 Prefs (Also versions 3, 4, & 5)

By Shawn Powers | Aug 31, 2011

In a corporate environment, it's often important to enforce Internet proxy settings for all users. Setting those options automatically is often difficult. Making them locked and immutable is even more difficult and poorly documented. Today we'll learn the basics, and from there you can customize Firefox as much or as little as you like. more>>

Creating a Centralized Syslog Server

By Jayson Broughton | Aug 18, 2011

A centralized syslog server was one of the first true SysAdmin tasks that I was given as a Linux Administrator way back in 1997. My boss at the time wanted to pull in log files from various appliances and have me use regexp to search them for certain key words. At the time Linux was still in its infancy, and I had just been dabbling with it in my free time. more>>

Tales from the Server Room - Panic on the Streets of London

By Kyle Rankin | Jul 31, 2011
What do you do when your kickstart doesn't kick? Find out what Kyle does in this first episode of Tales from the Server Room. more>>
Book

Getting Help from Linux - Part 1 Man Pages

By Jayson Broughton | Jul 27, 2011

man woman

No manual entry for woman more>>

Oooh, I just know I'm going to hear it in the comments for that one. But you know what? Just how many of you have tried something similar with other words? You know you have at least once or twice. Go ahead, try one or two..you might be surprised.

iSCSI Lab

Creating Software-backed iSCSI Targets in Red Hat Enterprise Linux 6

By Pete Vargas Mas | Jul 20, 2011

Studying for certification exams can be an adventure. Even more so when the certification exam is a hands-on, performance-based exam. The quandry most people I know fall into, is that to effectively study for such an exam, you need access to a lab environment with elements that may be beyond the scope of the average Linux enthusiast. One such element is iSCSI.  more>>

Archiving CDs to ISO from the Command Line

By Jayson Broughton | Jul 07, 2011

A few weeks ago I was working on a PC when I needed to grab the motherboard driver CD.  In a perfect world, the CD would be located in a nice protective sleeve, safely kept away from the nasty elements that encompass the IT tech area (read: coffee, scratches, and the occasional jelly doughnut).  But in this case, it appeared someone had taken this CD and wiped it a more>>

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Speed up your downloads with Axel

By Jayson Broughton | Jun 29, 2011

"Nothing travels faster than the speed of light, with the possible exception ofbad news, which obeys its own set of laws" ~ Douglas Adams more>>

Fun with ethtool

By Jayson Broughton | May 24, 2011

Time to be honest here for a minute. The open source community really has outdone themselves coming up with some very obscure names for packages. Let's take this list of packages for instance: emacs, gimp, gcc, mutt, grub, kyle rankin, parted, tar, mutt, vim. Nine times out of ten, a common person is going to look at that list and become utterly confused over what package does what. more>>

SOGo—Open-Source Groupware

By Ludovic Marcotte | Feb 28, 2011
The current state of SOGo and its integration capabilities with desktop and mobile clients. more>>
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