Thursday, October 24, 2013

VirtualBox: Import OVA

VirtualBox is a program that allows Virtual Machine (VM) to be created so that it runs on the Host Machine as if there are two real computer machines in the front of you.
Virtual Machine is useful, amongst all, for trying out software without disturbing the Host Machine setting. Any changes to Virtual Machine will not affect Host Machine at all. Furthermore, the Virtual Machine is “portable” in the sense that it can be copied from one computer to another.
The following tutorial guides you to import a pre-created Virtual Machine using an Oracle VirtualBox Appliance (OVA) file.
  1. Run VirtualBox Manager
    Go to menu File/Import Appliance.

  2. Choose OVA file.
    Click Choose and Browse the location of the OVA file. 

  3. Import OVA file.
    View file details and click Import to proceed.

  4. Import Done.
    New Virtual Machine has been successfully created from the imported OVA.

  5. Check Setting.
    Before running the virtual machine, check the following setting (go to menu Machine/Settings).
    a. Base Memory
    By rule of thumb, it should be some value not greater than half of the memory of Host Machine.

    b. Processor setting.
    Some VM, e.g. Android VM requires PAE function.

    c. Check storage.
    Sometimes there are missing storages attached to the VM and this might cause error. 

    d. Check network.
    Network setting can be customized according to how you want your VM to connect to the computer network. As for a start, just leave it set to NAT.

    e. USB Controller.
    Some host machines may not have support for USB Controller. If VirtualBox reports that USB Controller is not supported and you do not plan to use the controller, untick the option.
    f. Shared Folder.
    Shared Folder is useful especially when you want to copy files between Host Machine and Virtual Machine. If, however, VirtualBox reports that there is missing Shared Folder, check the Folders List and delete any missing entry.

  6. Run.
    You can now run the VM by clicking the start Button.

    The VM will run within its own windows as follows.


Friday, October 18, 2013

Uninstall Applications In Mac OS

AppDelete is an uninstaller for Macs that will remove not only Applications but also Widgets, Preference Panes, Plugins, and Screensavers along with their associated files. Without AppDelete these associated items will be left behind to take up space and potentially cause issues. For a proper uninstall don’t just delete but be sure to AppDelete!

You can drag any item that can be uninstalled onto AppDelete: Applications, Widgets, Preference Panes, Plugins, Screensavers, etc.

You can also activate AppDelete in many ways: dragging items onto main window, onto dock icon, selecting in menu, right-clicking using AppDelete workflow, and throwing items in the trash. When the preview screen appears you can uncheck any items you would like to exclude.

You also have several choices: delete the items, log only the items, or archive (copy) the items to a .zip file for safekeeping or reinstall at a later date. The items you delete will be moved to the trash and arranged in a folder so that you can see exactly what was deleted and you know exactly where it came from. The items will not be removed from your computer until you empty them from your trash. You can also undo the last delete if you choose.

There are various options to make your AppDelete experience complete: Quick search panels to help choose items for deletion, Force Empty Trash, an Orphans feature to search and delete orphaned files, Install from Archive even for another Mac, various options in Preferences, and more...

Additional Features:
  • Thirteen languages: English, Chinese, Danish, Dutch, Finnish, French, German, Italian, Japanese, Portuguese (Brazilian), Russian, Spanish, and Swedish
  • Quick-search panels with filters to find items for deletion fast (including old PPC apps)
  • Hidden mode for full background operation
  • Finds associated items that are invisible or hidden
  • Orphans feature to find and remove "orphaned" files
  • Archive/Install from Archive feature for safekeeping and transferring items to another Mac
  • Sparkle updater to always have the latest version
  • Preference to protect Default (Apple) apps
  • Password requested only once if needed instead of multiple requests
  • Keeps a Log of all activities and has the ability to Undo a deletion
  • Moves items into an organized deleted package in your trash
  • Force Empty Trash for stubborn to remove items

Wednesday, October 16, 2013

Android Studio Setup Wizard


Android Studio Setup Wizard

1) Run Setup Wizard.
2)Finding Java Bin Folder.
3) Choose users.
4) Install Location.
5) Start Menu Folder
6) Installation done.
7) Completing the Android Studio Setup Wizard.
8) Android Studio Splash Screen.
9) Import Setting wizard.
10) Loading Main Window
11) Running Android Studio For The First Time.
Choose New Project…
12. New Project Wizard Window
13) Launcher Icon.
14) Activity Template.
15) Activity Properties.
16) If Windows Security Alert pops up, click Unblock.
17) Building project info.
18) Done.

Android Studio For Windows

1) Setting Up

1.1) Go to URL
Find the button Download Android Studio v0.2.x for Windows
Click the button.

1.2) Launch the downloaded EXE file, android-studio-bundle-<version>.exe.

1.3) Follow the setup wizard to install Android Studio.

Known issue: On some Windows systems, the launcher script does not find where Java is installed. If you encounter this problem, you need to set an environment variable indicating the correct location.
Select Start menu > Computer > System Properties > Advanced System Properties. Then open Advanced tab > Environment Variables and add a new system variable JAVA_HOME that points to your JDK folder, for example C:\Program Files\Java\jdk1.7.0_21.

Note: On Windows and Mac, the individual tools and other SDK packages are saved within the Android Studio application directory. To access the tools directly, use a terminal to navigate into the application and locate the sdk/ directory. For example:
Windows: \Users\<user>\AppData\Local\Android\android-studio\sdk\
Mac: /Applications/Android\

Android Studio For Mac

1) Setting Up

1.1) Go to URL
Click the button.

1.2) The link to Mac OS X installer will be displayed, e.g. android-studio-bundle-130.737825-mac.dmg

1.3) Open the downloaded DMG file, android-studio-bundle-<version>.dmg.

1.4) Drag and drop Android Studio into the Applications folder.

Known issue: Depending on your security settings, when you attempt to open Android Studio, you might see a warning that says the package is damaged and should be moved to the trash. If this happens, go to System Preferences > Security & Privacy and under Allow applications downloaded from, select Anywhere. Then open Android Studio again.

Android Studio For Linux

1) Setting Up

1.1) Go to URL
Click the button.

1.2) The link to Linux installer will be displayed, e.g. android-studio-bundle-130.737825-linux.tgz

1.3) Unpack the downloaded Tar file, android-studio-bundle-<version>.tgz, into an appropriate location for your applications.

1.4) To launch Android Studio, navigate to the android-studio/bin/ directory in a terminal and execute

1.5) You may want to add android-studio/bin/ to your PATH environmental variable so that you can start Android Studio from any directory. Tutorial: Learn To Code Computer Instructions Tutorial: Learn To Code Computer Instructions

1) Setting Up

1.1) Go to URL

1.2) Click Signup.

1.3) Fill in the details and Click Signup.

1.4) Check your email to get the activation code.

1.5) Your account is activated and you can login now.

2) Dashboard

2.1) Upon login, you will get a dashboard menu on top right of the window.

3) Start learning

3.1) Click Topics.
3.2) Click Select Lessons.

4) Web Basics (HTML and CSS)

4.1) Click the button to start learning.

Saturday, October 12, 2013

Xamarin Tutorial: Use C# to Create iOS, Android, Mac and Windows apps

1) Go to URL
Notice the Download button.

2) Click the Download Now button.

Python Portable

As the name suggests, Python Portable can be installed to USB drive and this makes it portable.

1) Go to URL

2) Scroll down to find the following section:

3) Download the file and run it, e.g python

4) The installer will ask you to provide a location into which the python interpreter to be extracted.

5) Done.

6) Find the executable file Python-Portable.exe , run and type the command:

 print "Hello, world"

Take note that if you are running Python 3, then the command would be:

 print ("Hello, world")

7) Next? Go to to learn python programming by following simple visual steps.