How to Change MAC address on Mac OSX

If you want to change the MAC address of your Mac do this in Terminal:

1. Check the current MAC address of your Mac:
ifconfig en0 |grep ether

2. Generate new random MAC address:
openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//'


3. Change MAC address of your Mac:
sudo ifconfig en0 ether d4:33:a3:ed:f2:12 (it is just example)


4. Check the changes:
ifconfig en0 |grep ether

Mac OSX hints resources

Here are the resources of many hints you would to know about your Mac:

macosxhints.com
macworld.com
http://mac.appstorm.net/roundups/utilities-roundups/40-super-secret-os-x-lion-features-and-shortcuts/
http://computerlearnhow.com/list-of-97-mac-os-x-keyboard-shortcuts
Useful utility CheatSheet: http://itunes.apple.com/us/app/cheatsheet/id529456740?mt=12

Why there is no update for Android 4 for HTC HD

Read the article "HTC: Desire HD to stay on current software, no ICS update" about why there is no update for Android 4 for HTC HD.

Mac OSX Central Update Manager Alternative

There is no Central Update Manager on Mac as it is on Linux. If you want something like that you can use 3rd party application AppFresh as its alternative. It will update 99% of your soft.
Download AppFresh here http://osx.iusethis.com/app/appfresh

How to Attach Java Source Code in Eclipse

Here is the simple way how to Attach Java Source Code in Eclipse:

WAY 1

1. Go to the page where this source is located (in my case it was not something like src.zip or FILE, but whole FOLDER with everything you need): http://download.java.net/openjdk/jdk6/ This is how this page it looks like http://nekaka.com/d/quyFnl0ynC

2. Download archive with the name "openjdk-6-src-b25-01_may_2012.tar.gz" (as an example). 

Or download it directly from this link: http://nekaka.com/d/92tCNq5nhN (I hope it is still there).

3. Again (this is important) when you will unpack this archive you will not find any src.zip, all you need is this very FOLDER with same name openjdk-6-src-b25-01_may_2012.

4. Now this is what you need to do in Eclipse - press the button "Attach Source", here is like it looks like http://cavdar.net/uploads/2008/07/method1.gif and... THIS IS VERY IMPORTANT (this super hint costs many hours) choose EXTERNAL FOLDER (NOT FILE) pointing to the unpacked folder with the source code openjdk-6-src-b25-01_may_2012.

5. Press OK and that's it. Once again: don't look for the magic file SRC.ZIP

WAY 2

1. Do everything as it is in WAY 1, but instead of selecting openjdk-6-src-b25-01_may_2012 folder do select sources from Android SDK folder:

LINKS:

Downloading the Source Tree on source.android.com

http://www.satyakomatineni.com/akc/servlet/DisplayServlet?url=DisplayNoteMPURL&reportId=2904&ownerUserId=satya

http://geekycoder.wordpress.com/2009/07/03/how-to-download-latest-zip-android-source-code-and-using-it-in-intellij/

Mac OS X Internals: A Systems Approach

If you want to know more about Mac OS X buy this book "Mac OS X Internals: A Systems Approach".

You must have it!
http://www.amazon.com/Mac-OS-Internals-Systems-Approach/dp/0321278542

Java Collection Set to Array

If you want to change your Set implementation to Array this is the way you can make it:

Set<String> set = new HashSet<String>();
String[] array = set.toArray(new String[set.size()]);