Minix- an operating system

This operating system was created by Andrew S. Tanenbaum. Minix greatly influenced the design decisions of Linus Torvalds applied in the creation of Linux kernel. So it has lot of historical importance. This operating system is developed even now and is available for free download from Minix

Minix is a Unix-like computer operating system based on a microkernel architecture.Some of the key features of this operating system are:

-> Extremely small with the kernel within 6000 lines of code.
-> POSIX compliant
-> Parts that run in user mode runs in seperate modules and are insulated from each other. So very efficient in bug handling.
->Very reliable even in the case of a driver crash

And the best part of installing minix is for beginners who want to learn more about an operating system . They can use minix and can easily sperate each of the layers in order to understand each of its features.

Open source coder's block?

Here is an excellent pdf describing how you can beat the coder's blog:

Also, the catb link mentioned in the pdf is extremely helpful teaching how to be a hacker