Category Archives: Linux

Spammers targetting “techies”?

I’ve started seeing a trend in spam over the last few months increasingly using samples of Linux/Open Source software documentation for the subject line / random text to confuse Bayesian filters. Mostly it doesn’t help them get past SpamAssassin, but they’re trying to be clever and increase their chances. It does seem kind of futile though – technical users generally aren’t stupid enough to respond to spam.

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Installing Intel IPW2200BG under Linux

I’ve been using wifi on my Dell Inspiron 1150 laptop courtesy of a D-Link AirPlus DWL-G650+ Wireless Cardbus Adaptor. It’s been a great little card, but there’s no decent native Linux drivers supporting WPA encryption (or, at least, there weren’t when I first installed it). Now I’ve finally decided to move on, and purchased an Intel 2200BG mini-PCI wireless adaptor.
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DNS Propagation Checker

Ever wanted to check the result of a DNS lookup from various DNS servers, perhaps to see how far a recent DNS change has propagated – which servers are giving the new answer, and which still have the old answer cached?

I recently wrote a little Perl script to do just that. My DNS Propagation Checker will query a set of 10 servers at random and show you the results. (Be warned, it may be a little slow at times, because (a) it has to wait for the DNS servers (I might re-write it one day to do the requests concurrently) and (b) my poor little virtual server is a little slow and overloaded right now.

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GNU Screen – a primer

GNU Screen is a little-used but very powerful utility, allowing you to do more from a Linux console, whether from a “real” console or logged in to another machine via SSH.

It is “a full-screen window manager that multiplexes a physical terminal between several processes (typically interactive shells)“.

This is a simple guide to getting started with GNU Screen.

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