Build your own smartphone…..from scratch.

Electronics, gumstix, Linux, Opensource
 Yep, you can do it now.....The open source hacker community GizmoForYou is shipping a Linux hardware/software kit for building a modular touchscreen smartphone. Using the OMAP35x-based Gumstix Overo Earth single-board computer (SBC), the Flow phone offers numerous customization modules including GPS, 3.5G cellular, Bluetooth, WiFi, and a camera. At around $1300 for the complete kitchen sink version, it's not exactly cheap, but since they offer multiple choices for each component, you can pick and choose what you like to have inside your smartphone. Really neat stuff.For those of you who are not tuned into Gumstix, the Overo line is a new line of Computer-on-Module devices designed by Gumstix based on TI's OMAP Processor. Overo Earth comes with  the following specs:Processor: OMAP 3503 Application Processor with ARM Cortex-A8 CPUClock(MHz): 600 MHzPerformance:…
Read More

How to mount your Journalized HFS+ disk in Linux….

Apple, Linux, Macintosh, Opensource, OSX, osx Server
This is something that people who deal with OSX and Linux come across everyday. Yes you can format your USB stick or removable HD using FAT32. The problem is that FAT32 does not support large sized files which can cause problems. So how do you solve this.....Easy. Attach the Journalized HFS+ disk to your MAC and startup disk utility. Inside disk utility find the disk in question and click on the partition(s) while holding down the "ALT" key. Keep holding the key down and go to the File menu and choose "Disable Journaling" (command-J). Eject the disk, move it over to your linux machine and hook it up. Linux can now read and write to the disk. Once you're done, move the disk back to the apple machine and after…
Read More

Single command Ubuntu LAMP stack installation on Desktop Edition…..

CLI, Linux, Opensource, Ubuntu
This used to be a pain in the butt. Lots of manual apt-get lines and config edits to get it to work. Weŕe talking about installing the LAMP stack onto a preexisting Ubuntu Desktop Edition installation. I used to do this backwards in the old days by installing the Server edition first (with LAMP) and then getting the graphical desktop goodies installed on top of that. That method still works, but I found out that LAMP stack install on a Desktop edition is a simple one command affair. As of the 7.04 release, the Ubuntu base system includes Tasksel. You can install LAMP using tasksel.sudo tasksel install lamp-server
Read More

Writing Moblin (and Ubuntu) USB images using dd in OSX

Apple, Linux, Macintosh, OSX, osx Server, Tutorial, Ubuntu
I came across this problem this morning, while writing the newly downloaded moblin USB image file. The concept is straight forward, plugin a 1GB+ USB stick into a functioning Linux or Windows box, make sure the stick is not mounted and use dd to write the disk image to the stick. Under OSX however the instructions for unmounting are slightly different, so here are the quick steps:Download the desired .img file Open a Terminal (under Utilities) Run diskutil list to get the current list of devices Insert your flash media Run diskutil list again and determine the device node assigned to your flash media (e.g. /dev/disk2) Run diskutil unmountDisk /dev/diskN (replace N with the disk number from the last command; in the previous example, N would be 2) Execute sudo dd if=/path/to/downloaded.img of=/dev/diskN bs=1m (replace /path/to/downloaded.img with…
Read More

Moblin OS rocks…..

intel, Linux, Opensource, Technology
Heard of Moblin yet....Intel's foray into designing a Linux distro. Moblin is an open source project focused on building a Linux-based platform optimized for the next generation of mobile devices including Netbooks, Mobile Internet Devices, and In-vehicle infotainment systems. I came across the promo video below and I have to say I'm impressed. I'm downloading the beta image file right now to give it a try on my brand new Aspire One D150. More to come soon.....
Read More

ROCKS Cluster: "Unable to run job: denied: host is no submit host"

cluster, Linux, Opensource, Rocks
I ran into this a couple of weeks ago and it's been driving me bonkers. I finally figured out what's wrong. I was just trying to get my feet wet using the Sun Grid Engine and figured I follow their instruction page and try out the example shell script and submit it using "qsub" command. I was doing this on the frontend machine that's been configured properly as a ROCKS cluster frontend. This was not working and the error I kept getting was "Unable to run job: denied: host "name_of_computer" is no submit host. Exiting."After googling around for a couple of days I found the answer (atleast the answer in my case). Issuing the following command solved my problem:qconf -as frontend-nameApparently the SGE roll does not setup the frontend node…
Read More

Openfiler install on large disk + failover setup + usb install

Linux, openfiler, Opensource, Tutorial
Okay so I've been playing around with openfiler for the past couple of months. We're trying to setup a Student homedirectory NAS device and have a mirror machine that would take over if our primary dies. Our machines are hand built 13-TB NAS servers using 16 x 1TB Seagate disks and a 16 channel sata2 raid controller from 3Ware. There are several problems that one needs to overcome in this type of setup so I will try to cover it, bit by bit as I finish confirming it at work. As I said we're using a Super Micro case and motherboard (Dual Quadcore Xeon) and we've stuffed a 16 channel 3ware 9650 controller in there. The first issue we had was with hardware and the fact that we had some…
Read More

Linux Server-in-a-Plug is here…..only $100

embedded OS, Linux, Opensource
Marvell Semiconductors is now shipping their SheevaPlug linux machines. Little tiny Linux boxes the size of a plugin adapter. The SheevaPlug draws about 5 Watts of power, comes with Linux, and boasts completely open hardware and software designs. At $100 the platform is available in single quantities, and is priced within reach of students, hobbyists, and tinkerers. This looks like the perfect embeded platform for all sorts of stuff. Think home automation, security monitoring, ultra low powered file servers, ad-hoc mini clusters, not to mention robots and such .....there is no end to it.Its hardware design is completely open -- everything from schematics to Gerber files will be available on a marvell's website -- and ARM ports of several popular Linux distributions are already running, and included. More importantly, Marvell…
Read More

Sugar interface on a USB stick…..

Fedora Core, Linux, Opensource, Redhat, Ubuntu
Thanks to Sugar Labs you can now have your Ubuntu 8.10 or Fedora 10 linux distributions with sugar on it.....Shweet :-).  Yep you heard right, go here and grab your OLPC XO inspired 1GB USB stick image and boot all those old PC's into sugar. According to Walter Bender (the creator of Sugar OS) a new version dubbed Sucrose 0.84 is on its way soon. Complete article (including interview with Mr. Bender) is over at XConomy.
Read More