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Date:	Fri, 11 Apr 2014 09:20:21 +0200
From:	Thomas Wolff <towo AT towo DOT net>
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To:	cygwin AT cygwin DOT com
Subject:	Re: [PATCH] base-files-4.2-1: Change prompt if running with admin rights
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Am 10.04.2014 03:39, schrieb Andrey Repin:
> Greetings, Achim Gratz!
>
>> Christian Franke writes:
>>> Attached is an updated version of:
>>> https://sourceware.org/ml/cygwin/2012-02/msg00806.html
>> I'll put this on hold until the AD integration has landed in Cygwin
>> (which will require some larger changes anyway).
>> Generally I'd prefer to move such things that depend on personal
>> preferences like setting up prompts into profile.d where they are easier
>> to change and maintain independently from core system functionality.
>> Using the registry to check for administrative privileges is clever,
> But indirect.
> It does not guarantee, that a user have administrator rights, only that it has
> access to the specified registry key.
>
>> however I'm wondering why we shouldn't simply check via id (that's what
>> I'm doing personally at the moment).
> Unless there's a way to ask "if we're a part of <certain group>" or more
> direct questions, it would involve much tinkering.
> And I agree, that all tinkering needs to go into personal profile.
I use this in .bashrc (to embed $rootmark in an ESC sequence in PS1 later).
I think it doesn't have specific dependencies and also it's portable 
(except the group names are Windows ones...).

   if id | grep -e "gid=.*(root)" -e "gid=.*(Administrators)" > /dev/null
   then    rootmark="30;41"; dirmark=7
   elif id | grep -e "gid=.*(Power Users)" > /dev/null
   then    rootmark="30;43"; dirmark=7
   else    rootmark=0; dirmark="33;44"
   fi

Also I embed [$SHLVL] in PS1 unless it's 0, just as a suggestion.
------
Thomas

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