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From:	Achim Gratz <Stromeko AT nexgo DOT de>
To:	cygwin AT cygwin DOT com
Subject:	Re: tar cygwin64/ from old to new computer?
References:	<20181125143854 DOT GA20164 AT ingber DOT com> <20181125193110 DOT GA18332 AT ingber DOT com>
Date:	Sun, 25 Nov 2018 21:13:50 +0100
In-Reply-To:	<20181125193110.GA18332@ingber.com> (Lester Ingber's message of "Sun, 25 Nov 2018 11:31:10 -0800")
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Lester Ingber writes:
> On the new PC I use Powershell (as Admin) to run setup-x86_64.exe for the Base setup.

Not absolutely needed, but it creates all the directories and files you
need correctly, so it's a good start.

> From the old PC I can use the /etc/setup/installed.db file in the new machine at the same location.

…then modify it as described and then run setup.exe again and let it
"update" your installation.  If you had any services running you'll also
need to run their initialization scripts again.

> On the old machine, 5-6 years ago I used c:/cygwin64/ for the top
> directory, but now I'll use c:/cygwin/ .  I don't think this affects
> anything.

Not unless you have scripts that use the Windows path someplace.  You'll
find out soon enough, I think.

> I'll tar up all my /usr/local/ files to drop into the new PC.
>
> I didn't see the posting referred to by Achim, but I think all I need is the above.

It was this one:

  https://sourceware.org/ml/cygwin/2015-09/msg00023.html

You need a slight modification of the sed script however due to a more
recent format change of installed.db:

sed -re 's/^(.+) .+ ([01])$/\1 \1-0-0.tar.bz \2/' installed.db.old > /etc/setup/installed.db 



Regards,
Achim.
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