Call a shell command from Python

[Grant Edwards]

On 2016-11-01, Steve D'Aprano <steve+python at pearwood.info> wrote:
> On Tue, 1 Nov 2016 04:00 pm, Wildman wrote:
>
>> You are correct about that but, in this case grep never "sees" the '$'
>> sign.  Bash expands $USER to the actual user name beforehand.  If you
>> are on a Linux system, enter this into a terminal to illustrate:
>> 
>> sudo grep ^$USER\: /etc/shadow
>
> Bash is not involved here. Python is calling grep directly.

He's already been told this 6 times, and is willfully ignoring it.

Just give up.

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