Little Snitch: another Firewall for Mac

In MacOS, we have a default firewall which enable us to block incoming connections from the internet, Is this enough?

Sometimes what we need is to block both incoming and outgoing connections at the same time. How can we do this? It’s now pretty easy. LITTLE SNITCH is a brilliant choice can do it for you.

This is screenshot:

Screen Shot 2017-04-05 at 17.37.11

request to download it here: 

(please read the instruction carefully before installing)


Huy Nguyen.

CodeRunner 2.3: A brilliant “code runner” for your Mac


This is really awesome. We can run multiple programming language in a session. Everything would be looks like this:

Screen Shot 2017-04-04 at 16.12.09

Screen Shot 2017-04-04 at 16.12.19



(You will need to be signed in by using your Google account, request for file access and wait for my approval, I won’t public it completely as what I did before, So sorry for this inconvenient!)


my custom theme settings for IntelliJ IDEA

Hi guys!

Would you like to have an appearance like this on your IntelliJ IDEA?

(This works fine for both Community and Ultimate version).

Screen Shot 2017-03-28 at 00.24.58

Download the JAR file here:


How to use?

It’s really easy. Go to “File” -> “Import Settings“, browse and open up the downloaded JAR file.

Restarting IntelliJ IDEA. Enjoy!

What is the best FREE alternative for Microsoft Office?

I don’t want to say anything too much about this, LibreOffice is the best in my opinion!

Screen Shot 2017-03-27 at 02.36.31

Just experience it today! This is a completely FREE and Open-Source software, always available on the most popular operating systems, compatible with latest Microsoft document formats.

Get it here:

How to play NES games on MacOS?

Hey wasuppp how are you doing guys? I know everything nice today =))

Today I have a look back to Nintendo Entertainment System (NES), some classic games that shaped my childhood, you know “Super mario”? Oh my godness! It’s really amazing that you can actually play most of them in Mac OS (We have another way to play on Windows too!).

The first thing we need to have is OpenEmu (, just go to the link and download it, decompress the archive then copy it to your Application folder on your Mac.

Open it! the appearance would be looks like this:

Screen Shot 2017-03-18 at 00.35.36.png

Next, now we simply find out NES ROMs from internet, for example, I got some ROMs here:

Now from the left side, we choose “Nintendo (NES)”, then drag & drop the downloaded ROMs that you would like to play from this emulator. Then what you can see can be like this after I drag SuperMario to the OpenEmu:

Screen Shot 2017-03-18 at 00.41.46.png

Finally, just double click on it and enjoy your games!

Show/hide hidden files and folders in MacOS

Step 1: Open Terminal.

There are 2 ways to open Terminal:

Method 1: From Desktop (Finder), Go -> Applications -> Utilities ->


Method 2: Using hotkey to open Spotlight (Command + SpaceBar is default), type “Terminal” then press Enter to open up the Terminal.


Step 2: Copy this following line and paste it to your Terminal:

defaults write AppleShowAllFiles YES

Step 3: Relaunch Finder to see effects.

We also have 2 ways to do this step:

Method 1: Holding “Option/alt” on keyboard and right-click on “Finder” icon on the dock, choose “Relaunch”.


Method 2: Run this command from Terminal: killall Finder /System/Library/CoreServices/


To rollback to default setting (DO NOT show hidden files/folders), just replace YES to NO on the step 2.

How to download MP3 content from an online music service without any extension in Google Chrome?

This is not a new technique but not many people know that =)) This work well on many music services like: soundcloud, mp3zing, nhaccuatui, etc…

From Google Chrome, press F12 (or Ctrl + Shift + I) on your keyboard to open google developer tools panel, navigate to Network tab, choose Media. Then you click on play button from music page, if (3) not displayed as below, try to refresh the current page and hit Play again.