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Date: Tue, 28 Mar 2006 00:04:33 -0800
From: Yitzchak Scott-Thoennes <sthoenna AT efn DOT org>
To: cygwin AT cygwin DOT com
Subject: Re: how t o read env variable in cygwin
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On Mon, Mar 27, 2006 at 10:12:01AM -0500, Igor Peshansky wrote:
> On Mon, 27 Mar 2006, Eric Blake wrote:
> 
> > According to cyg_win_user on 3/27/2006 3:12 AM:
> > > i m trying to read environment variable in perl using
> > >
> > >         $OSTY = $ENV{OSTYPE};
> > > this will return os type as "linux" or "solaris". but when i try for
> > > cygwin it returns empty string. is the some other syntax of way of
> > > finding value of env variable in cygwin
> >
> > What shell are you using?  OSTYPE is auto-set to "cygwin" by bash, but
> > not by other shells (including if you are starting perl directly from
> > cmd.com).  Rather than reading an environment variable that is not
> > standardized and might not be set, you could always use 'uname -s'
> > instead.
> 
> Or use Perl's builtin $^O variable, which should be auto-set to "cygwin"
> (all lowercase).  "man perlvar" for more info.

All the possible values of $^O are listed in man perlport.

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