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From: David Karr <davidmichaelkarr@gmail.com>
Date: Fri, 16 Aug 2019 15:33:19 -0700
Message-ID: <CAA5t8VqUViA6Ztx+5U-kcjTebXZ2QkvQnJcRkUGZF2irBdineQ@mail.gmail.com>
Subject: Re: Win7 system update hosed something in Cygwin
To: L A Walsh <cygwin@tlinx.org>
Cc: "cygwin@cygwin.com" <cygwin@cygwin.com>
Content-Type: text/plain; charset="UTF-8"

On Fri, Aug 16, 2019 at 2:17 PM L A Walsh wrote:

> On 2019/08/15 18:28, David Karr wrote:
> > I logged into my Win7 laptop and I saw it was having some connection
> > problems, so I decided to reboot.
> >
> > After the reboot I found that Cygwin had some basic problems.  I brought
> up
> > a mintty window (C:\cygwin64\bin\mintty.exe -e /bin/bash --login) and the
> > prompt looked odd.  It wasn't the PS1 value that I set in my .bashrc. It
> > also seemed to be saying that my current directory was "/", which is not
> my
> > homedir.
> >
> You might want to read the section in the cygwin user manual, especially
> https://www.cygwin.com/cygwin-ug-net/ntsec.html#ntsec-mapping
>
> If you don't have /etc/passwd or /etc/group, cygwin will generate
> DOMAIN+USER entries dynamically each time you start cygwin (or per-boot)
> if you have cygwin processes started at boot.  The /etc/passwd and group
> files do not exist by default.
>
> If you want consistency -- same user names+id's with each boot and
> MS-Win compatible names, you may want to create /etc/passwd
> and /etc/group using mkpasswd, mkgroup and hand tuning.  It isn't
> suggested for most users, but it may be something you want.
>
>
I would most like to understand what changed to make this suddenly start
happening.

Also note the following:

$ mkpasswd -u <myuid> -d
<myuid>:*:2993517:1049089:U-ITSERVICES\<myuid>,S-1-5-21-2057499049-1289676208-1959431660-1944941:/home/<myuid>:/bin/bash

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