On Thu, 2014-08-14 at 18:35 +0400, Pavel Fedin wrote: > > No, I have ruby and gem installed. Works still fine for me. > > Just installed i386 version of Ruby, indeed works fine.
The Cygwin gem command itself is working just fine. Are you, or were you, trying to use a Windows version of ruby, or did you have such first in your PATH? That wouldn't work. Yaakov