Hi Gavin, you might be right. I am not 100% sure, though I *do* remember having a DOS tool that did exactly what I want to do when executed wihtin a DOS Shell in NT4. Nick. "Gavin Sinclair" <gsinclair / soyabean.com.au> wrote in message news:94316532409.20030328110823 / soyabean.com.au... > On Friday, March 28, 2003, 9:55:42 AM, Nick wrote: > > > Hi, > > > I am wondering if it is possible to write a Ruby script to change the > > directory, inside a Command Prompt window? > > > I want to do something like: > > > Before: > c:\>>ruby rubychdir.rbw data > > > After: > c:\data>> > > > Is this just not possible? > > Just not possible. A Ruby program, like any other program, can only > affect the environment of its own process and child processes. > > Gavin > >