Entering Cygwin command line (bash login) from Windows cmd.exe ?

Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Roland Mainz]

Hi!

----

Is there an official way to enter the Cygwin command line (e.g. bash
login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
machine he/she ends/up in a cmd.exe and not bash...

----

Bye,
Roland
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Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Roland Mainz]

On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz <roland.mainz@nrubsig.org> wrote:
> Is there an official way to enter the Cygwin command line (e.g. bash
> login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
> machine he/she ends/up in a cmd.exe and not bash...

ping!

----

Bye,
Roland
-- 
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  \__\/\/__/  MPEG specialist, C&&JAVA&&Sun&&Unix programmer
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 (;O/ \/ \O;)

RE: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[KAVALAGIOS Panagiotis (EEAS)]

> On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz <roland.mainz@nrubsig.org>
> wrote:
> > Is there an official way to enter the Cygwin command line (e.g. bash
> > login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
> > machine he/she ends/up in a cmd.exe and not bash...
> 
> ping!

You may run your favourite shell from the bin directory of your Cygwin installation:

"C:\Program Files\Cygwin\bin\bash.exe"
"C:\Program Files\Cygwin\bin\tcsh.exe"

replace " C:\Program Files" with your target Cygwin installation directory root.

Panos

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Roland Mainz]

On Mon, Aug 7, 2023 at 7:38 AM KAVALAGIOS Panagiotis (EEAS) via Cygwin
<cygwin@cygwin.com> wrote:
>
> > On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz <roland.mainz@nrubsig.org>
> > wrote:
> > > Is there an official way to enter the Cygwin command line (e.g. bash
> > > login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
> > > machine he/she ends/up in a cmd.exe and not bash...
> >
> > ping!
>
> You may run your favourite shell from the bin directory of your Cygwin installation:
>
> "C:\Program Files\Cygwin\bin\bash.exe"
> "C:\Program Files\Cygwin\bin\tcsh.exe"
>
> replace " C:\Program Files" with your target Cygwin installation directory root.

Thanks ;-)

Turns out my problem was simply that I forgot that just typing "bash"
only gives me an interactive shell, which sources only the interactive
shell configs (e.g. /etc/ksh.kshrc + ~/.kshrc for ksh93, and
/etc/bash.bashrc + ~/.bashrc for bash), but not the login configs
(e.g. /etc/profile + ~/.profile).

So the simple fix was just to type:
C:\Program Files\Cygwin\bin\bash.exe --login

or

C:\Program Files\Cygwin\bin\ksh93.exe --login

----

Bye,
Roland

P.S.: Which reminds me - is there a way to contribute a Cygwin ksh93 package ?
-- 
  __ .  . __
 (o.\ \/ /.o) roland.mainz@nrubsig.org
  \__\/\/__/  MPEG specialist, C&&JAVA&&Sun&&Unix programmer
  /O /==\ O\  TEL +49 641 3992797
 (;O/ \/ \O;)

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Jon Turney]

On 12/08/2023 23:52, Roland Mainz via Cygwin wrote:

> Roland
> 
> P.S.: Which reminds me - is there a way to contribute a Cygwin ksh93 package ?

https://cygwin.com/packaging-contributors-guide.html

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Martin Wege]

On Sun, Aug 13, 2023 at 12:53 AM Roland Mainz via Cygwin
<cygwin@cygwin.com> wrote:
>
> On Mon, Aug 7, 2023 at 7:38 AM KAVALAGIOS Panagiotis (EEAS) via Cygwin
> <cygwin@cygwin.com> wrote:
> >
> > > On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz <roland.mainz@nrubsig.org>
> > > wrote:
> > > > Is there an official way to enter the Cygwin command line (e.g. bash
> > > > login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
> > > > machine he/she ends/up in a cmd.exe and not bash...
> > >
> > > ping!
> >
> > You may run your favourite shell from the bin directory of your Cygwin installation:
> >
> > "C:\Program Files\Cygwin\bin\bash.exe"
> > "C:\Program Files\Cygwin\bin\tcsh.exe"
> >
> > replace " C:\Program Files" with your target Cygwin installation directory root.
>
> Thanks ;-)
>
> Turns out my problem was simply that I forgot that just typing "bash"
> only gives me an interactive shell, which sources only the interactive
> shell configs (e.g. /etc/ksh.kshrc + ~/.kshrc for ksh93, and
> /etc/bash.bashrc + ~/.bashrc for bash), but not the login configs
> (e.g. /etc/profile + ~/.profile).
>
> So the simple fix was just to type:
> C:\Program Files\Cygwin\bin\bash.exe --login
>
> or
>
> C:\Program Files\Cygwin\bin\ksh93.exe --login
>
> ----
>
> Bye,
> Roland
>
> P.S.: Which reminds me - is there a way to contribute a Cygwin ksh93 package ?

We would greatly appreciate a Korn Shell 93 package, preferably with
some POSIX builtin commands.

Thanks,
Martin

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Brian Inglis]

On 2023-08-13 11:40, Martin Wege via Cygwin wrote:
> On Sun, Aug 13, 2023 at 12:53 AM Roland Mainz via Cygwin wrote:
>> On Mon, Aug 7, 2023 at 7:38 AM KAVALAGIOS Panagiotis (EEAS) via Cygwin wrote:
>>>> On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz wrote:
>>>>> Is there an official way to enter the Cygwin command line (e.g. bash
>>>>> login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
>>>>> machine he/she ends/up in a cmd.exe and not bash...

>>> You may run your favourite shell from the bin directory of your Cygwin installation:
>>> "C:\Program Files\Cygwin\bin\bash.exe"
>>> "C:\Program Files\Cygwin\bin\tcsh.exe"
>>> replace " C:\Program Files" with your target Cygwin installation directory root.

>> Turns out my problem was simply that I forgot that just typing "bash"
>> only gives me an interactive shell, which sources only the interactive
>> shell configs (e.g. /etc/ksh.kshrc + ~/.kshrc for ksh93, and
>> /etc/bash.bashrc + ~/.bashrc for bash), but not the login configs
>> (e.g. /etc/profile + ~/.profile).
>> So the simple fix was just to type:
>> C:\Program Files\Cygwin\bin\bash.exe --login
>> or
>> C:\Program Files\Cygwin\bin\ksh93.exe --login
>> P.S.: Which reminds me - is there a way to contribute a Cygwin ksh93 package ?

> We would greatly appreciate a Korn Shell 93 package, preferably with
> some POSIX builtin commands.

$ cygcheck -p Korn
Found 6 matches for Korn
mksh-53a-1-src - mksh-src: MirBSD Korn Shell (source)
mksh-54-1-src - mksh-src: MirBSD Korn Shell (source)
mksh-56c-1-src - mksh-src: MirBSD Korn Shell (source)
mksh-53a-1 - mksh: MirBSD Korn Shell
mksh-54-1 - mksh: MirBSD Korn Shell
mksh-56c-1 - mksh: MirBSD Korn Shell

https://cygwin.com/packages/summary/mksh-src.html

POSIX only standardizes the POSIX shell sh (install man-pages-posix for docs).
Cygwin provides the dash POSIX compatible shell preinstalled as a base package.

Each shell provides its own builtins which may be similar, or have differnet 
names, and sufficient differences, to keep shell programmers in a job.

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Martin Wege]

On Mon, Aug 14, 2023 at 9:35 AM Brian Inglis <Brian.Inglis@shaw.ca> wrote:
>
> On 2023-08-13 11:40, Martin Wege via Cygwin wrote:
> > On Sun, Aug 13, 2023 at 12:53 AM Roland Mainz via Cygwin wrote:
> >> On Mon, Aug 7, 2023 at 7:38 AM KAVALAGIOS Panagiotis (EEAS) via Cygwin wrote:
> >>>> On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz wrote:
> >>>>> Is there an official way to enter the Cygwin command line (e.g. bash
> >>>>> login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
> >>>>> machine he/she ends/up in a cmd.exe and not bash...
>
> >>> You may run your favourite shell from the bin directory of your Cygwin installation:
> >>> "C:\Program Files\Cygwin\bin\bash.exe"
> >>> "C:\Program Files\Cygwin\bin\tcsh.exe"
> >>> replace " C:\Program Files" with your target Cygwin installation directory root.
>
> >> Turns out my problem was simply that I forgot that just typing "bash"
> >> only gives me an interactive shell, which sources only the interactive
> >> shell configs (e.g. /etc/ksh.kshrc + ~/.kshrc for ksh93, and
> >> /etc/bash.bashrc + ~/.bashrc for bash), but not the login configs
> >> (e.g. /etc/profile + ~/.profile).
> >> So the simple fix was just to type:
> >> C:\Program Files\Cygwin\bin\bash.exe --login
> >> or
> >> C:\Program Files\Cygwin\bin\ksh93.exe --login
> >> P.S.: Which reminds me - is there a way to contribute a Cygwin ksh93 package ?
>
> > We would greatly appreciate a Korn Shell 93 package, preferably with
> > some POSIX builtin commands.
>
> $ cygcheck -p Korn
> Found 6 matches for Korn
> mksh-53a-1-src - mksh-src: MirBSD Korn Shell (source)
> mksh-54-1-src - mksh-src: MirBSD Korn Shell (source)
> mksh-56c-1-src - mksh-src: MirBSD Korn Shell (source)
> mksh-53a-1 - mksh: MirBSD Korn Shell
> mksh-54-1 - mksh: MirBSD Korn Shell
> mksh-56c-1 - mksh: MirBSD Korn Shell
>
> https://cygwin.com/packages/summary/mksh-src.html

I know about that, but it has only ksh88 compatibility. What would be
great is the real ksh93, with IEEE754-style floating point math,
compound variables, and regex with ~(X) (egrep with logical AND),
~(E), .sh.match pattern matching facilities.

Thanks,
Martin

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Lee]

On 8/7/23, Roland Mainz via Cygwin  wrote:
> On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz  wrote:
>> Is there an official way to enter the Cygwin command line (e.g. bash
>> login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
>> machine he/she ends/up in a cmd.exe and not bash...
>
> ping!

Years ago this was the default way to start cygwin (I don't think I've
changed it, but who knows??)

C:\cygwin>type Cygwin.bat
@echo off

C:
chdir C:\cygwin\bin

bash --login -i


There's a Cygwin.bat in /etc/defaults that needs to be copied to the
cygwin root directory:

C:\cygwin>type etc\defaults\Cygwin.bat
@echo off
setlocal enableextensions
set TERM=
cd /d "%~dp0bin" && .\bash --login -i

C:\cygwin>

"cd /d" - Use the /D switch to change current drive in addition to
changing current directory for a drive.

"%~dp0" gives the path of the script, so if the .bat file is in
C:\cygwin then "%~dp0bin" expands to C:\cygwin\bin

Regards
Lee

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[Thomas Wolff]

Am 07.08.2023 um 06:02 schrieb Roland Mainz via Cygwin:
> On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz <roland.mainz@nrubsig.org> wrote:
>> Is there an official way to enter the Cygwin command line (e.g. bash
>> login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
>> machine he/she ends/up in a cmd.exe and not bash...
On the other hand, you could also stop the Windows ssh server, start the 
cygwin ssh server, to arrive in a cygwin shell directly.

Re: Entering Cygwin command line (bash login) from Windows cmd.exe ?

[ASSI]

Thomas Wolff via Cygwin writes:
> Am 07.08.2023 um 06:02 schrieb Roland Mainz via Cygwin:
>> On Sat, Jul 29, 2023 at 6:18 AM Roland Mainz <roland.mainz@nrubsig.org> wrote:
>>> Is there an official way to enter the Cygwin command line (e.g. bash
>>> login) from Windows cmd.exe, e.g. if someone ssh's into a Windows
>>> machine he/she ends/up in a cmd.exe and not bash...
> On the other hand, you could also stop the Windows ssh server, start
> the cygwin ssh server, to arrive in a cygwin shell directly.

Or just run the Cygwin SSH server on a different port (don't forget to
open it in the Firewall) and have it both ways.


Regards,
Achim.
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