We need to keep on working on several things viz. technologies, server, languages, databases, etc. When you get acquainted with new thing for you, you need to learn that and prepare your own notes. Thus these are notes prepared while working on concern thing. We would like to keep our notes publicly available so that it cab be useful anybody. So the objective is to distribute knowledge in different format.
This site is not a tutorial for any language; OS; technology; but it provides practical know-how required in day-to-day life. This is a very useful resource for open source based Administrator & Programmers.