[Tutor] run local script on a remote machine

[Alex Kleider]

On 2016-10-27 00:22, Cameron Simpson wrote:
> On 26Oct2016 10:44, Alex Kleider <akleider at sonic.net> wrote:
>> command = (
>> "ssh -p22 alex at 10.10.10.10 python3 -u - one two three < {}"
>>    .format(script))
>> ret = subprocess.call(shlex.split(command))
> 
> This is not fine.
..........
>  http://bobby-tables.com/

Thanks for the warning.  I'm aware of the injection problem and should 
have mentioned that the code exposed itself to this only because I was 
trying to make it as short as possible to demonstrate the problem.

> 
> The second problem, and the one causing your immediate issue, is the
> use of shlex.split.

Eliminating it made things work as desired.

> Hoping this clarifies what's going on and how to go forward.

It does that indeed.  Thank you very much.

> Please feel free to ask any questions that occur.

Also gratitude to you and the others on this list that are so generous 
with your advice.

Sincerely,
Alex