Can anyone tell me what the different flavours of UNIX are(at least 6) and their difference???

Answer 1

I'm not the one to answer this, but it looks like you're not getting an answer from the experts. Unix was developed in the university setting, where students would add features that struck their fancy. Several vendors have selected what they consider the "best" combination of features and marketed them. An example is Xenix. I haven't stayed real current, so I can't tell you what the popular versions are these days, but there are almost as many versions as there are people. Unix is structured as a core capability which can be easily extended. Some extensions are as simple as a series of commands tagged together, others are as complex as word processors and telecommunication capabilities. The strength of Unix, that it is very easy to add features, makes it very hard to limit it to a single universal definition. (Sort of the opposite approach to the one Apple has taken.) Hope this helps.