Description
For me, the section of Getopt and gstat in this document doesn't have enough description to run Breeze.
https://github.com/apache/airflow/blob/master/BREEZE.rst#getopt-and-gstat

Actual
After executing the following commands quoted from https://github.com/apache/airflow/blob/master/BREEZE.rst#getopt-and-gstat, I cannot know that the commads enabled the PATH properly.

echo 'export PATH="/usr/local/opt/gnu-getopt/bin:$PATH"' >> ~/.zprofile
. ~/.zprofile

Exepected
It's better to write commands for checking that getopt and gstat are succesfully installed.

$ getopt --version
getopt from util-linux 2.36.2
$ gstat --version
stat (GNU coreutils) 8.32
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Michael Meskes.

Use case / motivation
Because I'm not familiar with unix shell, with the exisiting document, I couldn't know those commands are properly installed or not.

Are you willing to submit a PR?
Yes, I'm ready.