Redirecting stderr to stdout through pipe doesn't work the way it does in Linux

cyg Simple cygsimple@gmail.com
Tue Dec 4 21:39:00 GMT 2018


On 12/4/2018 3:52 PM, Marco Atzeri wrote:
> Am 04.12.2018 um 21:41 schrieb David Karr:
>> "CYGWIN_NT-6.1 WACDTL03DK068X 2.9.0(0.318/5/3)"
>>
>> I installed a version of "kubectl" for windows, and I use it 
>> extensively in
>> Cygwin bash for scripting command-line automation. In general, this works
>> perfectly fine. I even use the same scripting in a Linux VM.
>>
>> I'm seeing an issue with one script that works fine in the Linux VM, but
>> not in Cygwin.
>>
>> The command line is approximately this:
>>
>>       kubectl exec pod -c container -i -t -- grep "string" 
>> stuff.properties
>> 2>&1 | sed -e 's/^propname=//'
>>
>> In Linux, this works perfectly fine.  In Cygwin, it says "stdout is not a
>> tty".
>>
>> I haven't updated my local Cygwin installation for quite a while. I'd
>> prefer not to, unless there is a strong chance this kind of thing 
>> would be
>> fixed.
>>
> 
> as kubectl is not a Cygwin program, it is not aware of cygwin pty.
> You can try to use winpty to overcome the problem.
> 
> https://github.com/rprichard/winpty

Or grab the source and try to build a Cygwin version.  Looks like there 
are a number of dependencies though but primarily golang.

-- 
cyg Simple

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