How to Randomize login screen in Ubuntu (GDM)

There’s nothing wrong with the default brownish “Human” Ubuntu login screen, but sometimes your brain might get bored with the same login screen overtime. So in this post I’ll be showing you how to randomize the GDM login screen through these simple steps :

From Desktop, go to System->Administration->Login Window

gdm.jpg

Choose “Random from Selected” from the selector in the Login Window dialog. And check all the GDM themes that you wish to be cycled each start up.

gdm-prefs.jpg

That’s it! close the dialog and logout from your GNOME session, it should display random login screens each time when you switch on your computer.

Need more themes?
You can always find and install more cool themes from Gnome Looks !

Hugin: Software To Create Panoramic Photograph in Ubuntu Linux

I’ve always wanted to try and take panoramic photographs using my dad’s Nikon Coolpix 5200. That day finally arrived when I finally have the free time to do so last week when I’ve to accompany my dad traveling to the countryside of my hometown.

separate.jpg

Using a tripod, I took 4 sets of photographs with the help of Nikon built-in panorama helper function. I was excited and about to use a Windows computer to stitch those photograph using software supplied with the camera when suddenly I thought of searching for a similar application on my trusty Ubuntu box.

To my delight I found Hugin! An open source panorama maker software which I use without hesitation to create a my first ever panoramic photos.

Hugin Panorama Maker

The interface was simple enough to use even for a first time use like me. What you need to do is to load all images into Hugin using the “Load Images” button, and it will start to process your images immediately.

After finished processing the photos, Hugin lets you fine tune the result using a dialog similar like below.

panorama2.png

After retouching and minor adjustment, I’ve ended with this panoramic photo!

p/s: Well the photo is not perfect in detail, but hey its my first try!

Quick Way to send files to mobile device via Bluetooth in Ubuntu Linux

Previously I’ve written a post about how to send/receive file over the bluetooth using CLI. Now i’m going to show you a quick way to send files over bluetooth using the standard “Send To” on GNOME. Like this

bluetooth

To enable this, you need :

  • gnome-bluetooth (available from the repository)
  • a Bluetooth dongle / device attached to your computer

After all requirements have been met, all you need to do is select the files which you wish to be send over bluetooth, and click “Send To”.

You should see a dialog similar like above, prompting you to select the desired bluetooth device.

It’s easy with Linux!

CenterIM and Finch – ncurses based Instant Messenger for Linux

Sometimes you can’t avoid it, you might have to work with computers without GUI such as on a dedicated server or when you are working on a remote computer.

Nevertheless for some reason you might find a need to communicate with other people through yahoo messenger or MSN, and when you don’t have the fancy XOrg, then this might be the solution for instant messaging on a console environment.

No. 1- Finch
http://pidgin.im

Finch is a console base frontend to libpurple which is used by Pidgin (formerly gaim). As such Finch shares a lot of similarities with its GUI counterpart, including the account settings.

finch1.jpg

finch21.jpg

Finch tries it best to be consistent with Pidgin, down to the account setting interface. The navigation interface is a bit confusing at first, but once you’ve mastered it you can easily switches the chat screen from one person to another.

The best thing about Finch is, it can be extended using plugins as Pidgin. Finch also can double-up as an IRC client if necessary though there are more suitable alternatives such as irssi and BitchX for the CLI environment.

No. 2- CenterIM (CenterICQ)
http://www.centerim.org/

Another ncurses-based instant messenger client that I find handy is centerim which supports ICQ, Yahoo!, AIM, MSN, IRC, Jabber, LiveJournal, and Gadu-Gadu IM protocol.

centerim.jpg

centerim2.jpg

centerim3.jpg

At first glance, Centerim seems to offer more configuration options than Finch. The text interface also has more contrast and easily readable than Finch. What makes it more interesting to use is that you can decide the placement and the size of ncurses interface more independently than whats offered in Finch.

The chat and buddy interface is much more intuitive than Finch and the user can navigate through the multiple interface with relative ease. This is mainly attributed to Centerim places hint on the interface so the user knows what to do in order to keep the conversation going.

My Thoughts
Overall I would prefer to use Centerim over Finch in any given time because centerim interface is much more easy to navigate and use compared to Finch. Although Finch can be customised or extended with its plugin architecture, that is hardly useful to me compared to a useful user interface

[tags]pidgin,im,yahoo,yahoo messenger,ym,gaim,centerim,icq,msn,google talk,gtalk,internet,chat,chatting[/tags]

How to switch between different Java (JVM) in Ubuntu and Debian GNU Linux

Sometimes its hard to avoid installing multiple Java Virtual Machines (JVM) on your computer because it has something to do with application compatibility or software development purposes.

This creates an annoyance when you just want to run one of the JVM instead of another for a specific task, then having to switch to another JVM for other tasks.

Here’s an easy way to setup a default JVM (Java interpreter and javac) and switch between several JVM in Ubuntu / Debian based distribution.

From the console execute

[code]
sudo update-alternatives –config java
[/code]

Then you’ll be presented with this menu,

jvmtn.jpg

Select the Java distribution which best suits you and press enter. You’re done. You can always change the default JVM for your Ubuntu/Debian distribution by repeating this steps.

[tags]java,jdk,j2sdk,ubuntu,debian,linux,jvm,vm,javac[/tags]

Happy Birthday to me :p

Usually I don’t post these things on my blog. But seems APZ from ICCL took the time to create a birthday strip for me so I think it would be appropriate to share with you out here.

The work has been put together using Maya on Debian Etch.

Enjoy !

mypapit.jpg

[tags]linux,apz,iccl,comics,comic,online comic,debian,maya[/tags]