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Date:	Sat, 15 Mar 2008 06:47:04 -0600
From:	Eric Blake <ebb9 AT byu DOT net>
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Subject:	Re: ash/bash postinstall dance [Was: Cygwin doesn't install on Windows Server 2008 (x64).]
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According to Brian Dessent on 3/14/2008 11:56 PM:
| That brings up an interesting, and I think valid question -- Why are we
| still catering to systems that might be stuck in 2005 with an ash
| /bin/sh?

Hmm - maybe it is time that we could assume that such systems have been
phased out.  At any rate, the release of cygwin 1.7.0 is an ideal time for
making any drastic cleanup changes, where we can intentionally change
package layouts compared to old versions.

|  If we change the bash binary package to extract both /bin/sh
| and /bin/bash (the setup program expands hard links in the tarball as
| copies, so we can use a hard link there to save space) then that means
| that we don't have to worry about copying anything to sh.exe anymore, it
| will always be in sync with bash.exe.

Except that the bash postinstall tries to do one other thing - it caters
to users who prefer ksh, zsh, or the relatively recent posh as their
/bin/sh.  While it is not the default installation, I also don't want to
forbid it.  In other words, bash tries to upgrade /bin/sh only if it can
identify it as ash or bash, and not if it is some other shell.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
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