Procedure – set the time zone on a per user basis

Open user ~/.bashrc or ~/.bash_profile file using vi text editor and set up TZ environment variable. Append or SET TZ as follows:

export TZ=”/usr/share/zoneinfo/{TIMEZONE-DIRECTORY}/{TIMEZONE_FILE}>”

If your username is foo and you would like to set TZ to Asia/Calcutta (INDIA IST) type command:

# vi /home/foo/.bashrc

Append following:

export TZ="/usr/share/zoneinfo/Asia/Calcutta"

Save and close the file.

(via http://www.cyberciti.biz/faq/howto-linux-set-time-zone-per-user-basis/)

How-To: Install Mac OS X – DellEFI Method

are pretty good. I followed Section 2 Part A. One thing to note, when booting the system via the “small” USB drive you will have to press “esc” and select the larger USB drive to boot from. The syslinux/isolinux on the small USB drive will continue to boot in a loop until you break the cycle. Other than that everything worked like a charm right from the start (camera, audio, wifi, etc…).

I still need to install and tweet some additional settings and my 16 GB USB drive will always be close by (6 GB installation). Additional links and information are below – enjoy.

• How To: Hackintosh a Dell Mini 9 Into the Ultimate OS X Netbook
• Virtually increase your Dell Mini Screen Resolution
• http://code.google.com/p/mydellmini/downloads/list
• http://www.eternalstorms.at/utilities/presentyourapps/index.html

First some background:

All IP addresses (IPv4 and IPv6) are allocated in large blocks to a regional registry (ARIN, RIPE, etc…) these registries then in turn allocate addresses down to ISPs, ISPs to customers and so on. By default the registry will allocate a /32 to an ISP and the ISP is supposed to allocate a /48 to a customer. The IPv6 equivalent of a IPv4 /24 subnet is a /64 which is the space a customer should break their network segments into.

This is where my brain starts to hurt.

An IPv6 /32 is 2^16 (65536) /48 subnets, which in turn are each 2^16 /64 subnets. A /64 is 2^64 addresses, the square of the size of the entire IPv4 Internet. It took me a while to find a calculator that would actually give the expanded result – 18,446,744,073,709,552,000.

The numbers are just unbelievably large. Anyways back to the problem at hand, how does an ISP properly subnet their /32 space to customers (or better put what are the breakpoints in the subnets)?
The answer is incredibly simple, since IPv6 is going to be subnetted based on the existing “:” octet separator all you need to do is increase the number and volia. Phyber’s IPv6 allocation is 2637:f238/32 which means the subnets are:


2607:f238:0000/48
2607:f238:0001/48
2607:f238:0002/48


And so on and so on. Another trick, IPv6 isn’t just 0-9, the numbering is 0-9 + a-f or:


2607:f238:0008/48
2607:f238:0009/48
2607:f238:000a/48
2607:f238:000b/48


It is a ridiculous amount of IP space. I’ll post more when I figure out what we are doing for our cross connects and loopback interfaces.

After scouring the Internet this weekend, and waiting on hold with AT&T my fears were confirmed. There is simply no way to remove the “Emergency Call” option when the phone is locked. However I did find another option which has been working just as good if not better. By holding down the mute key the phone will go into standby mode disabling all of the keys except the mute button. Unfortunately I cannot figure out how to map the side keys to the standby function, but it is a step in the right direction.