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RE: can not find valid cygwin path


From: "Dave Korn" <dave.korn@artimi.com>
To: <cygwin@cygwin.com>
Subject: RE: can not find valid cygwin path
Date: Tue, 1 Nov 2005 17:16:28 -0000

lin q wrote:
> Hi,
>    I have the latest cygwin installed on WinXP SP1. It works fine in
> general until I try to run some program today.
>
>   It is really weired, the program requiring setting up some environment
> viriables, I guess iniside its code it tries to find some data based on
> that variable setting. Anyway, I do it something like this in my script,
>
> export PROG_ENV=/cygdrive/c/prog
> export PATH=$PROG_ENV/bin/nt:$PATH
>
> echo $PATH
> $PROG_ENV/bin/nt/prog.exe
>

  Woops.  That's wrong already.  $PROG_ENV should have been expanded in
"export PATH=" command, so "echo $PATH" should not show "$PROG_ENV/.." but
"/cygdrive/c/prog/bin/nt....", as below:

--------------------------------<snip!>--------------------------------
dk@espanola ~> echo $PATH
/artimi/swtools/windows/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/win/c
/W
INDOWS/system32:/win/c/WINDOWS:/win/c/WINDOWS/System32/Wbem:/artimi/chips/ness
/b
in:/win/c/Modeltech_6.0d/win32:/win/c/Modeltech_6.0d/win32pe:/win/c/WINDOWS/sy
st
em32:/win/c/WINDOWS:/win/c/WINDOWS/System32/Wbem:/usr/bin
dk@espanola ~> cat foo.sh
#!/bin/bash
export PROG_ENV=/cygdrive/c/prog
export PATH=$PROG_ENV/bin/nt:$PATH
echo $PATH

dk@espanola ~> . foo.sh
/cygdrive/c/prog/bin/nt:/artimi/swtools/windows/bin:/usr/local/bin:/usr/bin:/b
in
:/usr/X11R6/bin:/win/c/WINDOWS/system32:/win/c/WINDOWS:/win/c/WINDOWS/System32
/W
bem:/artimi/chips/ness/bin:/win/c/Modeltech_6.0d/win32:/win/c/Modeltech_6.0d/w
in
32pe:/win/c/WINDOWS/system32:/win/c/WINDOWS:/win/c/WINDOWS/System32/Wbem:/usr/
bi
n
dk@espanola ~>
--------------------------------<snip!>--------------------------------

What shell are you using?

    cheers,
      DaveK
--

I do not quite get what you are saying and your example, I am using BASH which the default cygwin shell.


In your example you can see that "/cygdrive/c/prog/bin/nt" is the first element in $PATH, that is what we want; "$PROG_ENV/bin/nt/prog.exe" is expanded to "/cygdrive/c/prog/bin/nt/prog.exe" correctly.

These are all as expected, the problem is why the correct path can not be taken.

Do I miss anything?

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