Archive for the ‘Computers’ Category

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How to clear Subclipse’s stored passwords

Monday, April 26th, 2010

I use the Eclipse 3.5 IDE with the Subclipse plugin to access my Subversion repository. Most of the time it works really well. However, this morning it kept asking me for my password for every comparison in the Team Synchronising perspective despite having my password stored in the encrypted store.

I searched around on the Subclipse wiki and found that the details were stored in the Windows %APPDATA%\Subversion\auth directory, which is C:\Documents and Settings\username\Application Data\Subversion\auth on this computer. As I was only having problems with one repository I did not want to delete all of the passwords. This meant opening up all of the files in the svn.simple directory and looking for the repository URLs. Fortunately, the files are all text but the file names are seemingly random hex digits.

After deleting the file for the problematic repository I just went to Eclipse again, entered my password once and the problem was solved. I did not even have to restart Eclipse.

Enhancement request 2775 on the Tigris issue tracker will hopefully be looked at in release 1.8 but it has been waiting for attention for almost 3 years now.

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JavaOne 2010 will be 19-23 September in SF

Thursday, January 28th, 2010

Oracle's purchase of Sun appears to have been finalised. If you visit sun.com you are redirected to oracle.com. Their developer site answers several questions including the fate of JavaOne 2010, which is the main Java conference that has been held each year in the Moscone Center in San Francisco. Here is a quote from Oracle:

Will there be a JavaOne in 2010?

Yes, there will be a JavaOne Conference in 2010. JavaOne will be co-located with Oracle Develop during Oracle OpenWorld in San Francisco from September 19-23, 2010. You may experience and register for JavaOne as a standalone conference just as before, or you can attend Oracle Develop 2010 and/or Oracle OpenWorld as well; it's your choice. Furthermore, unlike in recent years, JavaOne will focus solely on Java Technology and its associated ecosystem. You're welcome to attend Oracle Develop and Oracle OpenWorld to gain insight into specific products. As usual, all Java users and partners are invited to submit papers and to attend JavaOne.

And here's more good news: We're taking JavaOne and Oracle Develop on the road, arriving in Brazil, Russia, India, and China in 2010/2011. For the first time, the rapidly growing developer communities in those countries will have access to the JavaOne experience. Although the currently scheduled Sun Tech Days in India and Russia will continue to occur as planned, JavaOne and Oracle Develop will occur in place of Sun Tech Days thereafter.

I am very glad that JavaOne is still going ahead and it will be very interesting to compare it with previous conferences. I still need to read about the impact on other parts of Sun's business including the open source database MySQL.

Posted in Computers, Travel, USA | No Comments »

Java Plugin problem and workaround in Debian Squeeze

Thursday, December 24th, 2009

I use the Squeeze aka testing distribution of Debian Linux on my dual boot computer at home. After updating the packages yesterday I discovered that java applications including Tomcat and Java Webstart were unable to connect to the network.  I had no idea what was going on as I had not upgraded Java or Tomcat.  After a lot of searching through the logs and then the internet I found Debian Bug #560142 and Sun bug #6342561 describing the problem. Apparently, it is related to a change in IPv6 networking in the netbase package that causes Java applications to ignore IPv4 network connections, which is rather annoying.

Fortunately, there is a simple workaround for running servers:

echo 0 > /proc/sys/net/ipv6/bindv6only

You will also have to change the default value in /etc/sysctl.d/bindv6only.conf from 1 to 0 so that the value is used after a reboot.

This means that Java is able to connect to IPv4 servers.  Hopefully, this will be fixed soon but I'm glad to have found out what the problem was and to have a workaround.

Merry Christmas.

Posted in Computers, Debian | No Comments »

World Wide Web Consortium site gets face lift

Thursday, October 29th, 2009

The World Wide Web Consortium (W3C) has recently updated the design of their site on www.w3.org It now uses a pleasant mix of blue and green with some shadows. For some reason, I particularly like the extra thick underlining used for the links.

For those of you who do not know what the W3C is, the following text from their site explains it:

The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards

Posted in Computers, Webmasters | No Comments »

GamesCom in Cologne

Monday, August 31st, 2009

I was lucky enough to be able to get to GamesCom in Cologne to see possibly the largest electronic games exhibitions in Europe. I was astounded by the size of it and the amount of money that the game studios spend on their enormous sets. All of the Cologne Exhibition Centre was full. All the large companies were there like Nintendo, Sony, EA, Blizzard, Ubisoft, Activision, Sega, Microsoft, and many others.

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Posted in Computers, Europe, Germany, Travel | No Comments »

Useful Windows Utilities on Microsoft Web Site

Sunday, July 6th, 2008

Although I try to use Linux and my Mac as much as possible, my work often demands that I use Microsoft Windows so I have a dual-boot computer with Debian Linux and Windows XP. There are several free utilities on the Microsoft web site that are not included with Windows XP. I thought that some people might find it interesting to hear about these.

SyncToy

http://www.microsoft.com/downloads/details.aspx?familyid=E0FC1154-C975-4814-9649-CCE41AF06EB7&displaylang=en

Microsoft Photo Info 1.0

http://www.microsoft.com/downloads/details.aspx?familyid=B038D4B5-1D88-437C-9F54-1FB0D210B5EF&displaylang=en

Microsoft Network Monitor 3.1

http://www.microsoft.com/downloads/details.aspx?familyid=18B1D59D-F4D8-4213-8D17-2F6DDE7D7AAC&displaylang=en

Windows SteadyState

http://www.microsoft.com/downloads/details.aspx?familyid=D077A52D-93E9-4B02-BD95-9D770CCDB431&displaylang=en

Windows SteadyState was formerly known as Microsoft® Shared Computer Toolkit for Windows XP.) Whether you manage computers in a school computer lab or an Internet café, a library, or even in your home, Windows SteadyState helps make it easy for you to keep your computers running the way you want them to, no matter who uses them. Windows SteadyState is easier to download, set up, use, and maintain than Shared Computer Toolkit.

Microsoft Baseline Security Analyzer v2.0.1

http://www.microsoft.com/downloads/details.aspx?familyid=4B4ABA06-B5F9-4DAD-BE9D-7B51EC2E5AC9&displaylang=en

XML Notepad 2007 2.5
http://www.microsoft.com/downloads/details.aspx?familyid=72D6AA49-787D-4118-BA5F-4F30FE913628&displaylang=en

XML Notepad 2007 provides a simple intuitive user interface for browsing and editing XML documents.

XML Diff and Patch

http://download.microsoft.com/download/1/f/1/1f146f9b-2a71-4904-8b91-e2f62d7b64b3/xmldiffpatch.exe

The Microsoft XML Diff and Patch utility can be used for comparing two XML documents and then patching the original document with the differences, to create a final document. The utility can detect structural changes (such as the move of an XML subtree) and can create an Xml Diff Language Diffgram (XDL diffgram or just diffgram) that describes the differences between the two XML documents. The diffgram can then be used to display these differences or perform a patch using the XML Patch tool.

XSD Inference

http://download.microsoft.com/download/8/0/f/80fca9f1-292e-4b50-b512-ccf004d4b58e/xsdinference.exe

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King’s Studio

Monday, March 3rd, 2008

Kidapawan is just like any other cities in that more and more people are using mobile phones with built-in cameras so they can take pictures of anything just for fun. Some mobile phone cameras can take very good pictures without any problem so it is becoming very popular everywhere.
Although digital cameras are very good but its not as popular as mobile phones; there are far more mobile phones used in Kidapawan compared to digital cameras; they can be expensive. Once the picture is taken you need to have it printed at a studio or, if you have a computer and printer at home, you could import pictures to your machine and print them yourself.

King's StudioKing’s studio in Kidapawan has so much to offer to his customers from his significant expertise as a portrait photographer. He takes all sorts of taking pictures including ID, group pictures, passport photos and many other things. Some people might need pictures from their memory cards printing; it’s a very small card to store pictures from a digital camera. The studio can also print pictures from mobile phones, which are widely used by locals.

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Posted in Computers, Kidapawan, Philippines | No Comments »

Emcor Kidapawan Department Store

Friday, May 25th, 2007

Emcor Kidapawan

One of the best known stores in Kidapawan is Emcor, particularly for selling home items including a large selection of furniture. The Emcor website makes it easier for people browse the articles on display. Within the store itself there are loads of other things to buy like electronic goods and some of those items are really essential to use at home.

They also sell computers and if you are lucky you may be able to take advantage of their special offers like a package deal on PCs which include several items like monitor,keyboard, printer and many other little bits. The whole package does not necessarily mean it’s cheap though, but I think it is worth it to have all those extra pieces included; especially when installing a new computer you need a few things to ensure that the machine is running properly. Emcor store also does free home delivery on large articles like furniture and computers. They can install computers and connect it to the internet for you easily without any problem.

When I am in town I make sure I go shopping in this store for a few things I need for home.

If there is a problem with money the store has some payment options including a downpayment; it all depends on the purchase. When it is expensive item it can be a bit of a headache for some people to pay cash straightaway, so they prefer to split the cost by paying it monthly. Emcor also accepts Visa credit cards.

At the moment the Emcor website is being refurbished but hopefully it will be back soon.

Posted in Computers, Kidapawan, Philippines, Shops | No Comments »

Reverting to previous Postfix version due to bug #417530

Sunday, April 15th, 2007

I recently upgraded the Postfix mail server from 2.3.8 to 2.4.0 on a Debian linux server that has a 2.4 kernel due to other applications that it has. I always check the bug reports before upgrading packages but I obviously missed Debian bug #417530, whose summary is Fatal error: “epoll_create: Function not implemented” using kernel 2.4 and postfix 2.4. Normally Debian’s APT package management system contains all the dependencies but it did not contain a dependency on kernel 2.6 for the new epoll() function, which can improve network socket performance.

After upgrading Postfix I tried sending an email but Thunderbird gave an error message so I checked the syslog on the server and discovered the that the /var/log/syslog contained the following error message: postfix/master[24312]: fatal: epoll_create: Function not implemented I searched for Postfix bugs using the Debian bugs by package search plugin for Firefox.

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Posted in Computers, Debian, Postfix, Webmasters | No Comments »

Debian Linux

Saturday, February 24th, 2007

I recently bought a new computer and installed Debian Linux on it instead of Windows as I have very little need for Windows. Almost everything I want to do can be done with Linux so why waste my time and money on using Windows. Debian Linux is very easy to install; download a 300MB CD image, burn a CD and use that to boot the computer. Ensure you have a working internet connection for the computer and select the configuration you want. You can download a complete installation DVD if you do not have access to the internet for the new computer. I always use the testing aka etch distribution as it is a good compromise between recent versions and stability.
Debian Linux comes with a few games installed as standard; various simple arcade, board, card, kids, and strategy games. I don’t play a lot of games but I do like the simplicity and addictiveness of Tux Race aka Planet Penguin Racer, which is a 3D penguin sliding down various snow, ice and rock courses. It is available as a Debian package (planetpenguin-racer) so you can install it using apt or aptitude. Have a look at http://projects.planetpenguin.de/racer/ for more information.

If you like First Person Shooter (FPS) games then there is the open source Nexuiz available, which is similar to Quake, Doom, Wolfenstein. It makes good use of my NVidia graphics card.

Posted in Computers, Linux | No Comments »

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