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bash sometimes can't find #! interpreter

From: Jeff Stroomer
Subject: bash sometimes can't find #! interpreter
Date: Sun, 09 Mar 2003 13:08:43 -0700
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.2.1) Gecko/20021130

Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: cygwin
Compiler: i686-pc-cygwin-gcc
Compilation CFLAGS: -DPROGRAM='bash.exe' -DCONF_HOSTTYPE='i686' -DCONF_OSTYPE='cygwin' -DCONF_MACHTYPE='i686-pc-cygwin' -DCONF_VENDOR='pc' -DSHELL -DHAVE_CONFIG_H -DRECYCLES_PIDS -I. -I../bash-2.05b -I../bash-2.05b/include -I../bash-2.05b/lib -g -O2 uname output: CYGWIN_NT-5.1 xcostroomer20 1.3.20(0.73/3/2) 2003-02-08 12:10 i686 unknown unknown Cygwin
Machine Type: i686-pc-cygwin

Bash Version: 2.05b
Patch Level: 0
Release Status: release

   [Detailed description of the problem, suggestion, or complaint.]

Hello, and thanks in advance for the help.

I am having trouble getting bash to interpret #! lines correctly.  Here are
the details.

I made myself a little script called "myinterp", shown below:


 echo "got into myinterp"

I stored "myinterp" in c:/ then wrote a little shell script called "mytest".
Here it is:

 #! c:/myinterp

 echo "hello from mytest"

If I run "mytest" from the working directory, then everything is great.  But
if I change to some directory other than the one contining "mytest", and then run "mytest" using a full path, it fails the first time, giving me the message

 bash: /cygdrive/e/sandbox/env/Jobs/sysgen/bin/mytest: c:/myinterp: bad
 interpreter: No such file or directory

Oddly enough, if I try the same thing a second or third time, it works the
way it should.  I might be able to live with this, even though it's an
irritation.  But things get worse.  If I run the test simply by typing
"mytest" (in other words, if I count on my path to find the script), then
I always get the error message about the missing interpreter.

I thought perhaps I had an unholy mixture of software on my machine (three
year-old Dell PC running Win XP Pro), so I completely uninstalled my copy of
Cygwin (including the registry entries), then downloaded the latest from
cygwin.com and reinstalled, but I still have the problem.  I also tried
running tcsh, which made the problem disappear.

Jeff Stroomer

   [Describe the sequence of events that causes the problem
   to occur.]
See above.

   [Description of how to fix the problem.  If you don't know a
   fix for the problem, don't include this section.]

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