On Aug 24 18:24, Martin Wege via Cygwin wrote:
> On Sat, Aug 19, 2023 at 10:15 AM ASSI via Cygwin <cygwin@cygwin.com> wrote:
> >
> > Martin Wege via Cygwin writes:
> > > How can I find out whether the current Cygwin terminal has
> > > Administrator rights? I want to safeguard our admin scripts with a
> > > simple test and bail out with an error if someone wants to do admin
> > > stuff (say: regtool) without admin privileges.
> >
> > Windows really doesn't have a defined notion of what is or is not an
> > "administrator".  Each particular definition will be insufficient or
> > invalid in certain contexts.  When you're dealing with hardened
> > installations (via group policies or otherwise), large windows domains
> > and/or server administration you may have to be way more specific than
> > just looking at one simple indication.
> >
> > That said, most commonly the presence of SID S-1-5-32-544 in your user
> > token (in Cygwin: gid=544, unless you override it in the group config)
> > will be the best simple approximation.  Incidentally, this is what tcsh
> > is using on Cygwin to define the "superuser" for the purpose of setting
> > the prompt with "%#":
> > https://github.com/tcsh-org/tcsh/blob/d075ab5b4155ebff9d30e765733c030c3da5e362/tc.prompt.c#L212
> >
> > For (ba)sh scripts you can parse the output from id along the lines of
> >
> > id -G | grep -q '\<544\>' && echo admin || echo "not admin"
> 
> Is there any guarantee that the UNIX GID of the "administrator" will
> always be "544", regardless of locale or Country-specific version of
> Windows?

https://cygwin.com/pipermail/cygwin/2023-August/254218.html


Corinna

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