From: Feng He Date: 2013-01-07T20:07:55+09:00 Subject: Re: newbie question what am I doing wrong? 于 2013-1-7 19:01, Wayne Brissette 写道: > Since you mentioned Windows, substitute command prompt for DOS prompt. Once you open a DOS prompt, simply type: > > irb My win7 has no DOS, how to run ruby? thanks.