Eclipse Bangalore Camp: Mylyn Presentation

I was presenting at the Eclipse Bangalore Camp last week. i talked about Mylyn at this presentation. i am user of mylyn for long, and totally love it.

Mylyn,an eclipse plugin is lying the foundation for the next generation IDE. i would say Task focussed IDE, is a fundamental shift in the way ppl are going to use eclipse.

I would recommended any one doing serious development in eclipse to look at mylyn. This can revolutionize the way you work !.

So friends, go and get plugged in ..

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Upgrading to Ubuntu 7.10 (Hard disk based upgrade)

I had installed 7.06 and used for around 4 months. It was the first time have used on Linux outside the fedora world. I found it great and had reviewed it earlier. It was my time to catch on the Ubuntu 7.10 band wagon and i did it just 2 days after the release. Since then i have been testing my way in this Ubuntu land.

Today, i am sharing the iso image based upgrading, using my hard disk to upgrade. The steps for the upgrade are as follows:-

1. Download the Ubuntu alternate CD
i downloaded the ubuntu-7.10-alternate-i386.iso image


2. Keep the iso on your unused partition

When i say unused partition, i mean any disk partition which would not change during the upgrade process. In my case, i used my windows partition which i mounted read only (ntfs) in Ubuntu 7.06.


3. Back up all necessary data.


4. Mount the iso image.

I kept the iso image on my windows partitions and mounted the iso image from the same.

>mount -o loop ubuntu-7.10-alternate-i386.iso /ubuntugutsy


5. Run the cdromupgrade script from the mounted iso


>sudo /ubuntugutsy/cdromupgrade

When running the cdrom upgrade, the system would ask for permissions to download latest updates from the Internet. i would recommended you to download the same.



In case of using latest updates, the upgrade process to handle to additions problems. Firstly, it would handle packages which may not be included in the cdrom but are upgraded in 7.10 repository . At the same time, it would also install latest version (if any) of software available on cdrom also. This would make your life easier later on.


6. Go through the upgrade and enjoy the new Ubuntu 7.10.

Using Tessarct-ocr with Ubuntu and Gutsy

In my previous posts, I talked about installing tesseract-ocr on Ubuntu, I played and spent some time with it. It seems to have failed on my assessment. I don’t want to blame ocr program for it. It my be that I may not have configured it correct. I have read a number of entries on tesseract-ocr on Ubuntu. And feel it may be just my configuration and scanning problem. I would spend some time later next month to see if I can figure it out. More later on the same.

I would take this opportunity to talk about upcoming ubuntu 7.10 (Gutsy). I looked at the release notes for 7.10 Release candidate and I would like to point out few things I am waiting for:-

• xrandr support

It would make dual display easier to configure (with the help of Graphical configuration tool for X) and projector friendly .Although I regularly use Ubuntu with dual monitor at home, I have failed to use a projector with Ubuntu 7.06. Hopefully xrandr would change it.

• Plug and play support for Printer

As a windows user at work, I am used to plug and play support for all kinds of device. Something which doesn’t happen as effective in Ubuntu. The plug and play support for printer is great work in the right direction. Let’s see how it works.

Ubuntu(7.04) and Eclipse.

Today, let us talk about eclipse 3.3 on Ubuntu. Being an Java Programmer, eclipse plays an important role in my life.

Installing Java

I have installed JDK 1.6 from the multiverse repository for Ubuntu 7.04 . The process involves downloading sun-java6-jdk package from the multiverse repository.

Installing eclipse

I downloaded eclipse archive from the eclipse site, unzipped it and executed the eclipse binary. It easily detected the jdk and worked great. Performance was also good.

All was not over, once i started with some serious memory hogging stuff using GMF on eclipse, the ide started to crash. This happened a number of times, i tried increasing the memory but it didn't help. Finally, after a lot of searching i found refers to issue in the jdk with reference to perm space. It seems some people have successfully resolved it my increasing perm size, but it didn't work for me.

I finally decided to install jdk 1.5, the jdk 1.5 package is sun-java5-jdk , and it ships jdk 1.5.0_11 on (Ubuntu 7.04). And switched the default java to 1.5 using update-alternatives command.The perm space issues are resolved in 1.5.0_8, so the later versions worked perfectly. Once i upgraded and started using the new jdk with eclipse i have not faced the permspace issues.

Eclipse on Ubuntu gives me good performance, specially good behaviour in compiling large projects.