Posts from — December 2009

One of my friends who is into networks always joke, as why there is no single Unix command to return only the IP address and nothing else. Here is a script that just does that one thing and nothing else.

#!/usr/bin/env bash # Arvinder Singh Kang # askang@olemiss.edu # Version 0.1 - 2009-06-02 # ipaddress: This snippet returns the ipaddress of the current computer. Store in a directory which is in the PATH, and make it executable by running "chmod +x ipaddress". # Running command ipaddress should return ipaddresses of this machine.

ifconfig  | grep -E 'inet.[0-9]' | grep -v '127.0.0.1' | awk '{ print $2}'

For imaging(reinstalling/updating/blah blah!) more than fifty ppc iMacs and G5 Mac Towers in less than a day, I started using Deploy Studio instead of NetRestore.

However on booting a client from the NetBoot server, i got the following sign on ppc client machine

After reading some notes on NetBoot here, I found this reason:

The mach.macos.mkext file is a kernel extensions cache — a file containing all the important kernel extensions for basic network booting. Its fairly uncommon to run into problems in this stage of the Netboot process, however, there are a couple specific issues that can cause kernel panics at this point. Possible problems would be:

Not having a mach.macosx and mach.macosx.mkext file in your Netboot set

And when checked mach.macosx.mkext was actually missing from the nbi’s dmg file. So I generated one using following code

kextcache -a ppc -m /Library/NetBoot/NetBootSP0/DeployStudioRuntime-091207-145110.nbi/ppc/mach.macosx.mkext -N -L /Volumes/DeployStudioRuntime/System/Library/Extensions/

And my netboot imaging operation was back in business. Ahhh…. Freshly minted macs by the time I walk in tomorrow morning.

Update March 6, 2010 : As the unrooted phone does not allow change in the phone ROM, this would only run on rooted phone. Here are five reasons why you should root your phone. One way to do it, is listed on CyanogenMod wiki.

I use Google G1 running Android OS for my email. To enable Punjabi on android I used the following steps

1. Download a Unicode Punjabi font.
2. Copy this font to your sdcard and rename it exactly DroidSansFallback.ttf.

Now start Terminal Emulator and type exactly (watch the Case) the following commands, followed by enter.

su (then wait for the superuser screen and press yes)
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
chmod 4755 /system/fonts/DroidSansFallback.ttf
dd if=/sdcard/DroidSansFallback.ttf of=/system/fonts/DroidSansFallback.ttf
reboot

Voila you should be able to read Hukamnama and emails written in Punjabi.

Thanks to Droidbot for the idea

I recently returned from Web 2.0 expo in New York.

What fascinated me the most is the fast pace and energy in the entrepreneurs compared to some of my friends doing startups on the West Coast.

I have compiled notes for reference. Feel free to help yourself and if you use an idea to create next web 3.0 products, 5% of your company belongs to me

Web 2.0 Expo Notes – NY November 16-19, 2009 | Learn.ArvinderKang.com

Creative Commons image by Magify.net