Added compatibility with osx

[xmnlab]

In this PR:

• Changed /bin/bash to /usr/bin/env bash to allow bash from conda. This script need new bash, osx bash default is older that bash used by linux by default.
• Changed id to whoami command line to keep compatibility with osx
• Added SYSTEMD_PATH variable

[xmnlab]

cc @tonyfast

[andrewseidl]

Thanks @xmnlab !

What do you plan on using this for? systemd only exists on Linux, which is why there are a few Linux-isms in there. We might want a separate script for macOS with defaults for that platform.

[xmnlab]

Oh I see ... I didn't know that ... thanks for the explanation! I just know that it doesn't work inside a docker container.

What do you plan on using this for? systemd only exists on Linux, which is why there are a few Linux-isms in there.

Actually I was not planning to use systemd (because it doesn't work inside docker container) I just planned to change this script and allow it to run in macos environment (called from any folder) and on the conda build task I will comment via sed the line with sudo systemctl daemon-reload

We might want a separate script for macOS with defaults for that platform.

I see ... do you want to keep any of these changes in this PR?

for macOS, should I create a similar file but without the systemd stuff?