Mac OS X Yosemite

Ars Technica has a fantastically detailed review (25 pages) of the latest OS X release, Yosemite. I’m browsing though the article as my 5.1GB download is slowly coming across the tubes. Maybe sometime tonight it will have completed and I’ll be ready to install :-)

In the meantime, I’m wondering whether I like the ‘flat’ UI look, and prefer the 3d style icons and shadows in my dock, but I’m sure I’ll get used to it.

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Kantronics All Mode TNC – useful commands and tips

I’m still learning what the different commands are, but here’s what I’ve worked out so far (some of this might be wrong, if so leave me a comment!)

  • c callsign : connect to callsign
  • c callsign1 via callsign2 : connect via some other station you can hear
  • unproto name via call1, call2, etc : sets the routing list of stations where your want your packets to be sent when in conv mode (?)
  • when you connect (c) direct to another station, you enter conv mode with that station
  • conv: enter conv mode when not directly connected to another station (packets are broadcast to the stations in your unproto string)
  • Ctrl-C : to exit conv mode, and get back to cmd: mode
  • perm : write settings to eprom

Useful commands when connected to someone’s bbs:

  • l : list all messages
  • lm : list messages to me
  • b : list broadcast messages
  • s callsign : send message to callsign
  • r # : read msg #
  • b (bye) : exit

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Mounting Atari ST floppies on Ubuntu

I’m transferring some apps downloaded for my Atari ST (don’t ask) to floppies that are formatted with 80 tracks and 8 or 9 sectors, on double density disks (formatted on the ST). From what I understand these are MS-DOS readable but not exactly FAT format. Anyway, they don’t seem to mount by default on Ubuntu as it doesn’t know what format they are, but forcing a mount with this seems to work:

sudo udisks --mount /dev/fd0

seems to do the job (tip from here)

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2014 vs 2013 California QSO Party (CQP) scores for Yolo County

Since having my Amateur Radio license just over a year, I’ve yet to go all out on a contest and work every hour permitted, but I have enjoyed the opportunity to work some contacts for my log. Last year’s California QSO Party I only worked a few QSOs. If I remember back to last year, I did call CQ for 20 mins or so and didn’t get any takers, so did some search and pounce and picked up a handful of contacts:2013 CQP Yolo resultsThis year I worked a couple of hours over Sat and Sun, and got significantly more that my 8 QSOs last year, but nowhere close to K6Y’s score. I’ve submitted my log and will wait for the final scores to be published :-) All in all, had a good result this year!

 

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Updating log4j 1.x to 2.x

I’ve used Log4J 1.x for ages, and not even realized that the 1.x code line is not maintained any more, it seems all the activity is on 2.x as the latest maintained version of the framework.

To move from 1.x to 2.x, there’s a few changes:

If you’re using Maven for your dependencies, replace

<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
</dependency>

with

<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.0.2</version>
</dependency>

<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.0.2</version>
</dependency>

The API has changed from:

org.apache.log4j.Logger

and

Logger.getLogger()

 

to

org.apache.logging.log4j.Logger

and

org.apache.logging.log4j.LogManager.getLogger()

 

Sample xml config – use filename log4j2.xml instead of log4j.xml (or log4j.properties):

<?xml version=”1.0″ encoding=”UTF-8″?>
<Configuration>
<Appenders>
<Console name=”STDOUT” target=”SYSTEM_OUT”>
<PatternLayout pattern=”%C – %m%n”/>
</Console>
</Appenders>
<Loggers>
<Logger name=”example.logger.name” level=”debug”/>
<Root level=”debug”>
<AppenderRef ref=”STDOUT”/>
</Root>
</Loggers>
</Configuration>

Additional useful info here.

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Adding a JMS Queue to Wildfly 8.x

The messaging subsystem in Wildfly is enabled in the standalone-full.xml config (not standalone.xml).

To add a new queue, search for <subsystem xmlns=”urn:jboss:domain:messaging:2.0″>, and then within the <hornetq-server> section, add a new <jms-destinations> if it doesn’t exist already, and define your queue name and JNDI lookup:

<jms-destinations>
    <jms-queue name="exampleQueue">
        <entry name="jms/queue/example"/>
        <entry name="java:jboss/exported/jms/queue/example"/>
    </jms-queue>
</jms-destinations>

 

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James Gosling at JavaOne 2014 vs JavaOne 2009

JavaOne 2014 wrapped up today, and was another great year, with plenty of awesome sessions. James Gosling played an active part in the Q&A during the Community Keynote this morning, and also gave a retrospective of the development of Java. He was wearing one of his Nighthacks Diner shirts, which I think we’re given out as a special prize at a JavaOne several years back (based on the painting by Edward Hopper, ‘Nighthawks Diner’). I seem to remember the design on this particular shirt, so did some digging in my photos from JavaOne conferences in the past, and here you go:

This is from JavaOne 2009 – I believe James was visiting some of the exhibitions in the Exhibition Hall:

 

And from this morning during the Community Keynote:

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