From: Nobuyoshi Nakada <nobu@...>
Date: 2009-01-20T13:13:59+09:00
Subject: [ruby-core:21451] Re: [Bug #907] Various system() and backticks problems on Windows

Hi,

At Tue, 20 Jan 2009 08:44:50 +0900,
James M. Lawrence wrote in [ruby-core:21449]:
> > > Note there are other popular Windows shells such the
> > > PowerShell, so the general strategy of checking for built-in
> > > shell commands cannot work.
> >
> > Is COMSPEC the PowerShell by the default on such systems?
> 
> Probably not, but that is not relevant to the point I wanted to make.
> 
> If system("built-in-shell-command", "1") fails on Unix, then it should
> fail on Windows.

Many of built-in shell commands of Unix also exist as an
independent file. e.g., /bin/echo, /bin/test, /bin/[ and so on,
but not on Windows.

-- 
Nobu Nakada