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Date:	Tue, 14 Nov 2006 13:29:03 +0100 (CET)
Subject:	Re: [ANNOUNCEMENT] Updated: bash-3.2.3-5
From:	"Jan Bruun Andersen" <jan_bruun_andersen AT jabba DOT dk>
To:	cygwin AT cygwin DOT com
Reply-To:	jan_bruun_andersen AT jabba DOT dk
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I saw a couple of posts mentioning a problem with /bin/sh not being
updated and replaced with a copy of /bin/bash.

I had the same problem here yesterday/today, when I discovered that none
of my #!/bin/sh scripts was working. In fact, they did nothing!

I tried re-installing bash-3.2.3-5, I tried removing it (while ignoring
all warnings about dependencies) and installing (keeping) it, but /bin/sh
continued to be the same version from when I installed Cygwin back in
February 2006:

C:\cygwin\bin
> dir bash.exe sh.exe
 Volymen i enhet C har ingen etikett.
 Volymens serienummer är 141C-8ED0

 Innehåll i katalogen C:\cygwin\bin

2006-11-03  04:22           467 968 bash.exe

 Innehåll i katalogen C:\cygwin\bin

2006-02-08  19:03           451 072 sh.exe
               2 fil(er)             919 040 byte
               0 katalog(er)  22 278 008 832 byte ledigt

I had a look at the /etc/postinstall/00bash.sh.done and 01bash.sh.done
scripts and saw that they did some magic before calling
/etc/profile.d/00bash.sh.

I saw that the /etc/profile.d/00bash.sh tried to get the version from
/bin/sh, and tried that by hand by my CMD.EXE:

> \cygwin\bin\sh.exe --version

C:\cygwin\etc\profile.d
> \cygwin\bin\cygcheck.exe /bin/sh.exe
C:/cygwin/bin/sh.exe
  C:/cygwin/bin\cygwin1.dll
    C:\WINDOWS\system32\ADVAPI32.DLL
      C:\WINDOWS\system32\ntdll.dll
      C:\WINDOWS\system32\KERNEL32.dll
      C:\WINDOWS\system32\RPCRT4.dll
  C:/cygwin/bin\cygintl-3.dll
    C:/cygwin/bin\cygiconv-2.dll
  C:/cygwin/bin\cygreadline6.dll
    C:/cygwin/bin\cygncurses-8.dll
    C:\WINDOWS\system32\USER32.dll
      C:\WINDOWS\system32\GDI32.dll

Not being much wiser, I started a /bin/bash process, cd'ed to
/etc/profile.d and attempted to execute /etc/profile.d/00bash.sh:

$ cd /etc/profile.d/

[502] jba @ HERMETRIX /etc/profile.d
$ ll *bash*
-rwxr-x---+ 1 jba  839 Nov  3 04:22 00bash.csh
-rwxr-x---+ 1 jba 1942 Nov  3 04:22 00bash.sh

[503] jba @ HERMETRIX /etc/profile.d
$ /bin/bash -x ./00bash.sh
+ /bin/test /bin/sh.exe -ot /bin/bash.exe
++ cat /proc/2516/exename
+ /bin/test /bin/sh.exe -ef /usr/bin/bash.exe
+ test -f /bin/sh.exe
+ case `(cygcheck /bin/sh.exe) 2>&1` in
+ case `(/bin/sh.exe --version) 2>&1` in
+ return 0
./00bash.sh: line 29: return: can only `return' from a function or sourced
scrip
t
++ date '+%Y/%m/%d %T'
+ echo '2006/11/14 13:07:42 /etc/profile.d/00bash.sh:' 'Attempting to
update /bi
n/sh.exe'
+ /bin/cp -fpuv /bin/bash.exe /bin/sh.exe

[504] jba @ HERMETRIX /etc/profile.d

The copy succeded and I got my updated /bin/sh.exe:

$ cd /bin

[505] jba @ HERMETRIX /bin
$ ll bash.exe sh.exe
-rwxr-x---+ 1 jba 467968 Nov  3 04:22 bash.exe
-rwxr-x---+ 1 jba 467968 Nov  3 04:22 sh.exe

I don't know if this helps anyone understanding why the bash postinstall
scripts did not succeed in updating /bin/sh.

-- 
Jan Bruun Andersen


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