X-Spam-Check-By: sourceware.org
From: ib AT wupperonline DOT de (Ingo Brueckl)
Date: Thu, 29 Dec 2005 03:11:00 +0100
Subject: COMSPEC environment variable missing
Message-ID: <43b345c3@wupperonline.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=iso-8859-1
To: cygwin AT cygwin DOT com
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

Hi.

I'm using the 20051227-snapshot of cygwin1.dll. This is my Windows 98SE
environment as told by the 'set' command:

  TMP=C:\WINDOWS\TEMP
  TEMP=C:\WINDOWS\TEMP
  PROMPT=$p$g
  winbootdir=C:\WINDOWS
  PATH=C:\WINDOWS;C:\WINDOWS\COMMAND
  COMSPEC=C:\WINDOWS\COMMAND.COM
  DIRCMD=/o:gne
  windir=C:\WINDOWS
  BLASTER=A220 I5 D1 H5 P330 T6
  CMDLINE=myset

In a cygwin program, there is no COMSPEC environment variable. I get NULL
when using getenv().

In order to check my cygwin environment, I wrote the following program:

  #include <stdio.h>
  #include <unistd.h>

  int main()
  {
    int i;

    for(i = 0;; i++)
      if (environ[i]) puts(environ[i]);
      else break;

    return 0;
  }

which returns:

  !C:=C:\WINDOWS\TEMP
  TMP=/tmp
  TEMP=/tmp
  PROMPT=$p$g
  WINBOOTDIR=C:\WINDOWS
  PATH=/cygdrive/c/WINDOWS:/cygdrive/c/WINDOWS/COMMAND
  DIRCMD=/o:gne
  WINDIR=C:\WINDOWS
  BLASTER=A220 I5 D1 H5 P330 T6
  CMDLINE=myset
  PATH=/cygdrive/c/WINDOWS:/cygdrive/c/WINDOWS/COMMAND
  TERM=cygwin
  HOME=/home/ib

Indeed, COMSPEC is missing, and PATH is twice.

A bug?

Ingo

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/