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Date: Tue, 16 Aug 2005 16:54:50 -0400
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Programatically finding value of "cygdrive" prefix
Message-ID: <20050816205450.GA16323@trixie.casa.cgf.cx>
Reply-To: cygwin AT cygwin DOT com
References: <42FA4604 DOT 8000507 AT tlinx DOT org> <20050810183616 DOT GA5892 AT trixie DOT casa DOT cgf DOT cx> <Pine DOT GSO DOT 4 DOT 61 DOT 0508152130380 DOT 9560 AT slinky DOT cs DOT nyu DOT edu> <1124222681 DOT 29974 DOT 37 DOT camel AT p450>
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User-Agent: Mutt/1.5.8i

In the spirit of this soon-to-be-week-old thread I think I've come up
with the ultimate way to find the cygdrive prefix.  It meets all of the
requirements that have been set out so far:

1) It is more complicated than my original solution

2) It is much slower than my original solution

3) It is not guaranteed to provide 100% correct results

4) Hitting CTRL-C while running it will leave stray subst'ed drives
around that you may not want (an added bonus).

Here it is:

  #!/bin/bash
  for f in c d e f g h i j k l m n o p q r s t u v w x y z; do
      subst "$f": "$SYSTEMROOT" >/dev/null 2>&1 || continue
      cd "$f":; cd ..
      cygdrive=$(pwd)
      subst /d "$f":
      break
  done
  echo "$cygdrive"

HTH.

cgf

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