Author Archives: Anders Rostgaard Bystrup

Messing with chinese spammers

When you see this in /var/log/mail.log, you know the chinese are out to get you: Aug 10 14:15:05 manstein postfix/smtpd[7858]: connect from[] Aug 10 14:15:08 manstein postfix/smtpd[7858]: warning:[]: SASL LOGIN authentication failed: authentication failure Aug 10 14:15:08 manstein postfix/smtpd[7858]: lost … Continue reading

Posted in Networking, Routing, SMTP | Tagged | Leave a comment

Tracking down a NoSuchMethodError

Caused by: java.lang.NoSuchMethodError: org.apache.xml.serializer.Encodings.isRecognizedEncoding(Ljava/lang/String;)Z at org.apache.xml.serializer.dom3.LSSerializerImpl.write( at … If you’ved ever had the unpleasant task of figuring out which of the 200+ JAR dependencies in your project that are causing the a NoSuchMethodError (usually in some XML or webservice code), … Continue reading

Posted in Coding, Java | Leave a comment

Static fixed and wifi IPs on Raspberry Pi

When coding to and configuring ones Raspberry Pi, it is convenient to have it on a wired connection, but when it is being deployed in the field, it is much easier to have it on wifi. Still, it can be … Continue reading

Posted in Linux, Networking, Raspberry Pi | Leave a comment

A selection of handy unix/linux one-liners

Over the years I’ve found myself repeatedly using (variations of) the same one-liners to achieve certain tasks in unix/linux environments. Task such as finding files containing strings, finding sizes of directories etc.

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HOWTO: Get IPv6 in your home

Since IPv6 Day when I registered for a SixXS handle, I’ve wanted to jump on the IPv6 wagon at home. My setup is a DSL line with Telenor as my ISP. Almost needless to say, Telenor does not do native … Continue reading

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HOWTO: Time lapse with Contour HD GPS

(NOTE: This is a work in progress and mostly to remind myself of the process…) When I started out experimenting with time lapse movies, I found there were surprisingly few ready-made open source or even commercial software packages that were … Continue reading

Posted in Linux, Photo | Tagged , , , , , | 1 Comment

GWTP, Guice and Spring non-trivial beans

Having struggled a bit with the somewhat terse documentation and JavaDoc I finally figured out the tricks of using Guice and GWTP along with Spring. As much for my own future reference and for others that may have the same … Continue reading

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