Archive for May, 2006

Using cfgadm to display LUNs on Solaris hosts

If you are trying to configure and unconfigure LUNs on a Solaris host, you may be suprised to find that the default ‘cfgadm -al’ output doesn’t display the LUNs on your system. To view the LUNs on a Solaris host, you need to use cfgadm’s show_SCSI_LUN option: $ cfgadm -al -o show_SCSI_LUN Ap_Id Type Receptacle […]

Finding words with look

If you have ever had a moment when you couldn’t recall a word from memory, but knew something about the word, you probably wandered to one of the numerous online dictionaries to find the name. If you happen to have a Solaris box handy, you can avoid the web and use the look utility to […]

Awesome SIP Tutorial

I have been spending a bit of my time reading up on VOIP protocols. While searching the ‘net for good SIP/RTP/RTCP documentation, I came across an awesome SIP tutorial. This tutorial is extremely well written, and definitely one of the best I have found so far!

Cool write up on AMD Opteron frequency scaling and TSC drift

This is a nifty write up on AMD Opteron frequency scaling and the issues associated with TSC drift: http://lkml.org/lkml/2005/11/4/173

Using BIND to reduce ad server content

Internet advertising has become big business, and we see the effects of it in almost every page we view. The ad content typically comes from one or more well known ad servers, and some folks have come up with some clever ways (e.g., hosts files, DNS integration, etc.) to minimize the “ad effect” in the […]

Splitting files with csplit

Periodically I find that I need to split a file into several pieces. There are a number of utilities that can be used to split a file, but I have grown to adore csplit. Csplit can split files based on regular expressions, or by quantity. The following example uses csplit to split /etc/services into a […]

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