DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 597Dqenx3652545
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 1ECDE3858D1E
MIME-Version: 1.0
References: <CAMpi71mcm+aOTqZxeUUFAiBk02OXEO32L0av1PKeXnwtynv-Xw AT mail DOT gmail DOT com>
 <d2c4b0b3-475a-4a80-ab36-4b0d2d30d130 AT gmail DOT com>
In-Reply-To: <d2c4b0b3-475a-4a80-ab36-4b0d2d30d130@gmail.com>
Date: Tue, 7 Oct 2025 15:51:02 +0200
Message-ID: <CA+1jF5oHRP82yDUkamd0=Dv33BcRR7=nd9vQ=zSZ5-_u_OfiYg@mail.gmail.com>
Subject: Re: C:\cygwin64\bin\python3 doesn't work from cmd
To: cygwin AT cygwin DOT com
From: =?utf-8?q?Aur=C3=A9lien_Couderc_via_Cygwin?= <cygwin AT cygwin DOT com>
Reply-To: =?UTF-8?Q?Aur=C3=A9lien_Couderc?= <aurelien DOT couderc2002 AT gmail DOT com>
Content-Type: text/plain; charset="utf-8"
Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>
Content-Transfer-Encoding: 8bit

On Tue, Oct 7, 2025 at 3:47 PM Marco Atzeri via Cygwin
<cygwin AT cygwin DOT com> wrote:
>
> On 07/10/2025 14:17, gamer 191 via Cygwin wrote:
> > Hi,
> > I noticed that C:\cygwin64\bin\python3 doesn't work if I invoke it from
> > command prompt, likely because it doesn't have the .exe extension. It works
> > if I create a copy named python3.exe.
> > Kind regards,
> > gamer191
> >
>
> Hi Gamer
>
> python3 is a Cygwin link managed by alternatives and NOT understood by
> command prompt.
>
>
> $ ls -l python3
> lrwxrwxrwx 1 marco Administrators 25 May 21  2023 python3 ->
> /etc/alternatives/python3
>
> $ alternatives --display python3
> python3 - status is auto.
>   link currently points to /usr/bin/python3.9
> /usr/bin/python3.8 - priority 38
> /usr/bin/python3.9 - priority 39
> Current `best' version is /usr/bin/python3.9.
>
>  From CMD you need to invoke directly the relative python3.9.exe
>
> c:\cygwin64\bin>dir /A /S python3*.*
>   Volume in drive C is OS
>   Volume Serial Number is 2232-4AA9
>
>   Directory of c:\cygwin64\bin
>
> 21/05/2023  20:47                64 python3
> 21/05/2023  20:48                78 python3-config
> 10/03/2023  00:34             3,420 python3.8-config
> 10/03/2023  00:34             9,747 python3.8.exe
> 08/03/2023  23:52             3,048 python3.9-config
> 08/03/2023  23:53             9,747 python3.9.exe
>                 8 File(s)         38,879 bytes

Could the setup.exe Cygwin installer PLEASE get a GUI(!!) option to
install packages using native Windows symlinks? That would fix that
recurring problem.

Aurélien
-- 
Aurélien Couderc <aurelien DOT couderc2002 AT gmail DOT com>
Big Data/Data mining expert, chess enthusiast

-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple