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Date: Sun, 25 Nov 2018 22:58:24 +0300
From: Andrey Repin <anrdaemon AT yandex DOT ru>
Reply-To: cygwin AT cygwin DOT com
Message-ID: <1381677255.20181125225824@yandex.ru>
To: L A Walsh <cygwin AT tlinx DOT org>, cygwin AT cygwin DOT com
Subject: Re: tar cygwin64/ from old to new computer:
In-Reply-To: <5BFAF665.2030202@tlinx.org>
References: <20181125143854 DOT GA20164 AT ingber DOT com>   <8d846c46-bfc4-7841-2ba7-1b354a9763bf AT t-online DOT de> <5BFAF665 DOT 2030202 AT tlinx DOT org>
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Greetings, L A Walsh!


> On 11/25/2018 9:08 AM, Hans-Bernhard Bröker wrote:
>> Am 25.11.2018 um 15:38 schrieb Lester Ingber:
>>> I'd like to simply transfer my cygwin64/ directory from my old Thinkpad
>>> to my new Thinkpad, both running Win 10 x64 Pro.  E.g., I would put my
>>> old c:/cygwin64/ onto a flash SSD USB drive e:/ .
>>> cd c:/
>>> tar cfp - cygwin64 > e:/cygwin64.tar &
>>> Then e:/cygwin64.tar would be mounted on my new computer.
>> 
>> You're overlooking a chicken-and-egg problem there: your new computer
>> has no 'tar' to unpack that file.
> ---
>         Hmm...can't tar it, but he could drag&drop from Explorer
> like he was moving the image (but do a copy instead).

It would screw permissions on Cygwin files/directories.

>         It should pick up everything, as that's what explorer
> would do.  

>         One caveat.  if you have a /etc/passwd + group...
> you will need to change the entries for local users on the disk cuz
> your computer's "machine id" has changed, and local accounts will
> get a different UID because of that.  If you don't use the /etc/passwd
> and group...then it might just work...though there will need to be
> some entry in the registry.  Might be easiest to install an empty
> cygwin on new machine (minimal install, only required packages),
> then copy your old cygwin-dir on top of the new one.

>         The worst that could happen is you'd have to reinstall the 
> normal way. (Obviously you don't destroy old image before new image
> is verified as working).


-- 
With best regards,
Andrey Repin
Sunday, November 25, 2018 22:57:46

Sorry for my terrible english...
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