How to Change the Computer Name in Ubuntu

1. Open a terminal window. 2. At the input prompt you will see this structure: “` nicholas@computer-name:~$ _ “` 3. So you have to edit the hostname file: “` sudo nano /etc/hostname “` 4. When prompted, enter the administrator password and hit Enter. 5. The hostname file will open, showing the current computer name. Replace the…


Unable to install Homebrew

Unable to install Homebrew with this? ruby -e “$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)” What’s happened -e:70: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777 ==> This script will install: /usr/local/bin/brew /usr/local/Library/… /usr/local/share/man/man1/brew.1 Press RETURN to continue or any other key to abort ==> /usr/bin/sudo /bin/chmod g+rwx /Library/Caches/Homebrew Password: ==> Downloading and installing Homebrew… remote: Counting objects:…


Save Terminal from Process Completed in Mac OSX

What’s happening One day, when I opened up terminal as usual, it showed [Process completed] and just terminated. I could not type any thing, run any scripts and work on my project. Even worse, this made me unable to install programs into my computer because many installations need to run shell scripts. Okay, I searched…


External directory in Xampp (Apache)

For both server and website developing, I usually use Xampp’s Apache to create a localhost server. However, I hate to put my important files in the htdocs inside Apache. Instead I would rather put the folder inside Documents, and make a link to htdocs. First, create a symbolic link from your actual folder to htdocs.…


How to Take a Screenshot on BlackBerry PlayBook

To capture screen in BlackBerry PlayBook, just hold the volume Up and Down buttons together. After a camera shutter sound, a screen image in the format JPG will be saved in Pictures > Camera folder.


Take a Screenshot on Samsung Galaxy S2 after the Upgrade to Ice Cream Sandwich

Thank you for checking out this tutorial. Reading the discussions in this post, seems like there is quite a number of people having troubles to take screenshots with Galaxy S2. To clear any confusions, I summarized some information and added as followings. Hope you could make it too. Fingers crossed. First, make sure your Galaxy…