Amazon EC2 Port Scanning Troubleshoot

Earlier this week, I got email from Amazon EC2 Abuse Team that my instance is reported that it has been port scanning remote hosts on the Internet. Oh yeah, that’s why my instance is terribly slow a few days back. I immediately login to the instance using ssh. When I run “uptime“, load average is […]

Changing Amazon AMI MOTD

Ever wonder how EC2 logo appear when you login ssh? Want to change/add logo to be appear to ssh login user? This maybe old and can find in other blogs. Anyway, here is how to do it in Amazon AMI. When you list the directory /etc/update-motd.d, you will see If you want to change just […]

IOKit not found Error on XCode Version Upgrade (5.1) (SDK7.1)

Today when I was archiving my iOS app, I got Apple Mach-O -Liner error. But I can build and run on simulators with no problem. I realized I update my XCode to latested version yesterday. The problem is the same is this link except my XCode version is 5.1 and SDK is 7.1. I followed […]

USB Recovery Using Clonezilla Live

It’s a long process for me to figure out “How to make USB Recovery using Clonezill Live” even if there is plenty of documentation and tutorial on internet. So I made this post people like me to create simple USB Recovery. Simple USB Recovery means plug in USB in target machine, boot from USB, press […]

Python Helps Me!!!

I was in trouble when I wanted my program to send email automatically as my program was writing in Javascript and XUL. You might all know that javascript has limited ability in sending email because of security feature. But for my program, it is not web application and I needed a feature to send mail […]

Editing “build.prop”

Today, I was busy trying to edit build.prop. As I am dummy on Android world or even in Linux, I was sweated. My head is spinning in google search. After several search and reading and failing, I success!!! :D Now I noted about it, just in case I need to ref these again. ( I […]


What am I doing these days? I am busy I might say. There were a lot of changes in last 3 months. I got a job. I got rejected for my employment pass by MOM. I got approved for my EP by MOM after 3 or 4 weeks of appealed. My mom came to Singapore […]

My project in MSc

This is about the project I am currently working. My project has 13 members of MSc students including me and 3 PhD students from same department. Our supervisor is Professor Dr. Tan from ICIS of EEE in NTU. The project is divided into 5 parts at first. (1) Infeasible Path Detection in Java(2) Infeasible Path […]