Microshell

Virtualization is one of the area I’m really an enthusiast. I’ve tried many solutions from Bosh on iMac G4 and PearPC on my Windows to VMWare and VirtualBox and at last to Xen. In fact, Miroshell’s sever is hosted on a Xen instance. I’ve also tried many emulators for game console like Nintendo 64, Sony [...]

There are times when we want to query a database structure for a particular table name. Or you want to find which tables a particular column name is defined. Or in my case, I wanted to find all tables that has column A and column B defined … how do I do it?
If you are [...]

is a very useful feature of SSH protocol. I’ve used it all the time to connect to a LAN network from public / DMZ network. At extreme case, I’ve created a tunnel that goes to another tunnel to reach the host. So how do you do it?
SSH Tunneling using PuTTY
PuTTY is my favorite SSH client [...]

SSH tunneling is, I think, one of the most powerful and important feature of SSH protocol. It’s also known as port forwarding. So what is port forwarding? The easiest thing to explain this, I think, is by example.
Let’s say you have your own server or a hosting account with shell access at some company. Let’s [...]

As the final question in one of my interviews a while ago, I was asked to compute the average degrees of separation in social networking site. If you don’t know what degree of separation, here’s an example.
Amy is a friend of Robert. Therefore, Amy and Robert are 1st degree friend. Robert is a friend of [...]