Ubuntu Packages - How to install gmpy on python

Know about Ubuntu Nickname
It depends on your Version on your Ubuntu, here some version of Ubuntu with their Nickname
Ubuntu 14.10 (Utopic)
Ubuntu 14.04.2 LTS (Trusty)
Ubuntu 12.04.5 LTS (Precise)
Ubuntu 10.04.4 LTS (Lucid)
You can find a more complete reference here
http://releases.ubuntu.com/

Check Ubuntu Version
To check your Ubuntu version
 lsb_release -a

Download your installer according to your Version
I am using precise, so I install it from here
http://packages.ubuntu.com/precise/math/python-gmpy

Search your package here [There is a search engine down the page]:
http://packages.ubuntu.com/

Install the installer
To install a deb package
sudo dpkg -i DEB_PACKAGE
http://askubuntu.com/questions/40779/how-do-i-install-a-deb-file-via-the-command-line

Getting Access Denied when accessing application data folder in Windows 7

Problem:
C:\Users\<ME AS ADMINSTRATOR>\AppData\Local\Application Data is not accessible

Those are junction points : hidden, protected operating system files that are not meant to be accessed by users.
Each one points to a user-accessible folder:

Real path is as follows:

Application Data - C:\Users\{user name}\AppData\Roaming
Cookies - C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Cookies
History - C:\Users\{user name}\AppData\Local\Microsoft\Windows\History
Local Settings - C:\Users\{user name}\AppData\Local
My Documents - C:\Users\{user name}\Documents
NetHood - C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Network Shortcuts
PrintHood - C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Printer Shortcuts
Recent - C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Recent
SendTo - C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\SendTo
Start Menu - C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu
Templates - C:\Users\{user name}\AppData\Roaming
Temporary Internet Files - C:\Users\{user name}\AppData\Local\Microsoft\Windows\Temporary Internet Files

Laptop wake up from sleep after closing the lip

I am using Toshiba Laptop with Windows 7.

Use tips from
http://www.howtogeek.com/122954/how-to-prevent-your-computer-from-waking-up-accidentally/

I turn off
Network adapters/Intel(R) Ethernet Connection I218-LM
Mice and other pointing devices/HID-compliant Mouse

[You could test whether you computer will be turned on with those devices after that]

How Rainbow Table Works

Objective: 

Given a hash, get back the hash key.

Naive Way: 

1. Too much space - Have all mappings between plaintext and hash key (almost impossible - too large space)

2. Too much time - Trying one by one plaintext and try mapping

Rainbow Table:

Compromise between Space and Time

1.       Find the correct chain – Using the last column

2.       Getting the plain text – Using the first column

3.       1 failed or 2 failed, try again

What if we use R rather than R1,R2,R3?

Regular Expression - replace group

I have a html
<a href="cc.ccs"/><a href="bb.ccs"/><a href="#"/>

I want to replace the non # href so that it become
<a href="my_cc.ccs"/><a href="my_bb.ccs"/><a href="#"/>

print re.sub(
r"href=\"([^#].*)\"", 
r"href=\"my_\g<1>",
r"<a href=\"my_cc.ccs\"/><a href=\"my_bb.ccs\"/><a href=\"#\"/>")

Open second winedt

http://tex.stackexchange.com/questions/11374/running-multiple-winedt-processes-on-windows-7-x64

Installation of Apache ODE on Windows 7

1. Use latest JRuby
2. Use latest JDK
3. Use Tomcat 6.0

Guideline of installation is here
http://ode.apache.org/developerguide/building-ode.html

---Some meta information for myself, not sure whether it is useful---

For rewriting (just rewriting it)

Installing Source of Apache ODE

My current version jdk 1.7 Update 51

Using latest junit

Set the java_home to jdk

Install buildr

Run buildr

macos with JDK 1.5 and JDK 1.6) is

buildr 1.4.4, jruby 1.5.1 (ruby 1.8.7 patchlevel 174).

Pasted from <http://ode.apache.org/developerguide/building-ode.html>

jruby -S gem install buildr -v 1.4.4

jruby -S gem install buildr --verbose

Pasted from <http://buildr.apache.org/installing.html#windows>

cd c:\

buildr package test=no

Pasted from <http://ode.apache.org/developerguide/building-ode.html>

buildr test

Pasted from <http://ode.apache.org/developerguide/building-ode.html>

buildr eclipse

Pasted from <http://ode.apache.org/developerguide/building-ode.html>