Is there a shell simulator

Is there a KornShell (ksh) simulator for practi开发者_如何转开发cing commands?

You don't want a simulator, run the real thing (it's tiny!).

On debian/ubuntu etc, apt-get install ksh

On windows, install Cygwin, then see http://cygwin.com/ml/cygwin/2008-05/msg00283.html

If you want to practice the shell and you're seriously unsure of your abilities, you may wish to create a new user account for testing. That way you reduce the chances of accidentally removing your entire photo library or music library or source code. :)

adduser or useradd on most Linux systems, though most distros have GUIs to guide you if you'd rather.