There are free unix shells out there, google will find them. Don't expect anything fancy, but you will be able to try all the commands talked about here.
To connect to the shell from Windows, you can use the Putty program (google for it), although the shell documentation will almost certainly tell you how to do it.
To connect to the shell from Windows, you can use the Putty program (google for it), although the shell documentation will almost certainly tell you how to do it.