On Tue, Dec 4, 2018 at 12:52 PM Marco Atzeri <marco.atzeri@gmail.com> 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
It turns out that not only had I already used winpty for similar
functionality, it was actually in place in the pipeline when I tried to do
this. When I turned on debugging output, it showed that kubectl was
already being wrapped by winpty when it reported "stdout is not a tty".
However, this was one shell script wrapper deeper than I usually call it.
Does it matter whether winpty is called from the shell script I'm calling,
or from the script being called by the script I'm calling?