Ubuntu 14.04 touchpad scrolling

In general, the touchpad on laptops can support scrolling by touching the left side or bottom of it if appropriate driver is installed. For Ubuntu 14.04, it sets touchpad to support two finger scroll by default. If one tries to use one finger scroll, follow the steps below.
1. Open System Settings->Mouse&Touchpad.

2. Unlock the Two finger scroll.

One can also set up Natural scrolling by this way.

Docky and Mac OS theme for Ubuntu

The look of Ubuntu is ugly. One can change its appearance to a Mac-like one by himself. Here is an example I tested on my Ubuntu. So far so good.
 The Docky I used is Cairo-Dock. It is fast and lightweight with good reviews. In addition, it can be installed through Ubuntu Software Center (USC). Just search Cairo in USC and install it. The only problem with it is the log-out command in the power menu might not work while the one in Cairo-Dock's menu can.
Then let unity launcher automatically hide by the command Appearance -> Behavior and turn off. One can also change the Reveal sensitivity here.
 The Mac OS themes, icons and cursors I tested is NoobsLab's version which can be installed by the following commands.

sudo add-apt-repository ppa:noobslab/themes

sudo apt-get update

sudo apt-get install mbuntu-y-ithemes-v4

sudo apt-get install mbuntu-y-icons-v4

 Then open the Unit Tweak Tool to choose the theme, icon and cursor you like. The appearance can change immediately corresponding to the option chosen. These schemes can be removed by the following command.

cd /usr/share/icons/mac-cursors && sudo ./uninstall-mac-cursors.sh

sudo apt-get remove mbuntu-y-icons-v4 mbuntu-y-ithemes-v4

Minecraft to minetest texture pack converter

Minetest is a free Minecraft-like infinite-world block sandbox game. It's full of fun. It can be installed on Linux operating system, like Ubuntu. The installation is easy, just following the instructions on Minetest official website. The only problem is that the texture of the official release is ugly. One can download the third party texture files from internet. One can also convert the texture files from Minecraft using the converter here (https://github.com/minermoder27/minecraft-to-minetest-tp-conv). People may meet problems with this converter. There are two ways to make it run correctly.
The first one is  moving "mc-to-mt-tp-conv" folder to inside of the assets folder. Then run the script conv.sh.
If one put "mc-to-mt-tp-conv" folder and assets folder in the same folder, one has to change two lines of the script file conv.sh as the following.
FILES=$(dirname "$0")/assets/minecraft/textures/blocks/*.png
FILES=$(dirname "$0")/assets/minecraft/textures/items/*.png

If one doesn't follow this instruction, the script wouldn't work.