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Message-ID: <48e6fb4c-2341-4f43-b158-d70a9b391f91@gmail.com>
Date: Wed, 3 Dec 2025 16:20:14 +0100
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: group '545' does not exist ?
Content-Language: en-GB
To: cygwin AT cygwin DOT com
References: <3a9f1d9a-d363-4617-bc24-e2b5aa4d27e9 AT gmail DOT com>
 <CAKAoaQntTmvE8EbKCiJMcySrhHG91a947A8WTvKkv3H6LzhsHg AT mail DOT gmail DOT com>
In-Reply-To: <CAKAoaQntTmvE8EbKCiJMcySrhHG91a947A8WTvKkv3H6LzhsHg@mail.gmail.com>
From: Marco Atzeri via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>
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On 03/12/2025 13:50, Roland Mainz via Cygwin wrote:
> On Wed, Dec 3, 2025 at 12:57 PM Marco Atzeri via Cygwin
> <cygwin AT cygwin DOT com> wrote:
>>
>> I am probably missing something, but this seems bizarre (to me)
>>
>> $ id
>> uid=197608(Marco) gid=197121(NESSUNO) groups=197121(NESSUNO),114(Account
>> locale e membro del gruppo Administrators),544(Administrators),547(Power
>> Users),545(Users),4(INTERACTIVE),66049(ACCESSO CONSOLE),11(Authenticated
>> Users),15(Questa organizzazione),113(Account
>> locale),4095(CurrentSession),66048(LOCALE),262154(Autenticazione
>> NTLM),405504(Livello obbligatorio alto)
>>
>>
>> $ newgrp 545 touch prova2
>> newgrp: group '545' does not exist
>>
>> $ uname -svr
>> CYGWIN_NT-10.0-26200 3.6.5-1.x86_64 2025-10-09 17:21 UTC
> 
> Please use the group name ("Users" in your case) and not the numeric GID.
> 
> If you really need to use the numeric gid, then you can use $ getent
> group 545 | awk -F ':' '{ print $1 } ' # to convert it to a group name
> (see comment below about localised Windows builtin group names), and
> then plug that into newgrp:
> $ newgrp "$(getent group 545 | awk -F ':' '{ print $1 } ')" touch prova2 #
> 
> BTW: There is one issue with this: Windows builtin account names
> (users+groups) can be localised, e.g. English gid=545 is "Users",
> while in German it's "Benutzer".
> 
> ----
> 
> Bye,
> Roland

Thanks

as usual PEBCAK	

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