When you say UNIX I'm assuming you mean Linux because cygwin is a linux environment emulator.. which commands did you want to try out that didn't work ? As far as I've seen, cygwin implements just about everything from linux.. you can even start an Xwindows session if you install the right packages.
Most likely whats happened is that you did just a default 'base' cygwin install which didn't install a lot of stuff.. run the install program again, you can select more components that you'd like to try out.
If you want to use Linux without all the hassles of dual booting and in a complete and safe manner, check out my post on vmware
www.firewall.cx/modules.php?name=Forums&...=viewtopic&t=243
It will allow you to have a complete linux (or any other os) machine running within your windows.. fully networked et all... without the guest machine even being aware of the windows host. Really awesome stuff.
