• read thru pmset man page
  https://www.reddit.com/r/MacOS/comments/168wxx8/in_amphetamine_when_always_starting_or_stopping/
  /Users/aidangibson/Library/Application Scripts/com.if.Amphetamine/enableDisableSleep.scpt

https://medium.com/macoclock/how-to-prevent-macos-catalina-from-sleeping-when-connected-to-an-external-monitor-e2c876dadaf9
A Macbook will not work in clamshell mode when connected to an external monitor without AC power.

Absolutely disgusting. But what can we do about it?

You can type the following in your shell:

sudo pmset disablesleep 1

This will keep your Macbook awake, even in clamshell mode, until you disable it by typing:

sudo pmset disablesleep 0

But typing in those two commands over and over is a tremendous drag. Let’s automate it!

Sudoers

We can’t automate jack shit if we’re constantly being queried for a password every time the command runs. Every time you use sudo in the Terminal, you are attempting to run a process as “root user” and will be queried for an admin password. Therefore, we are going to selectively nuke that security feature just for pmset and just for your account.

Allow your user to run sudo pmset with no password auth:

• > whoami to get your username. For me, that’s aidangibson.
• (optional) EDITOR=micro
• > sudo visudo -f /etc/sudoers.d/sudoers create new sudoers file
• aidangibson ALL = (root) NOPASSWD: /usr/bin/pmset Type this in exactly (obviously replacing my username with yours). Fucking up sudoers can absolutely fuck up your computer, which is why we’re not editing the sudoers file directly, instead using visudo.
• The general format for this is <username> ALL = (ALL) NOPASSWD: /path/to/program. You can also modify this file to allow you to use sudo with no password for all programs. But that’s incredibly stupid and I won’t tell you how to do it.

https://www.digitalocean.com/community/tutorials/how-to-edit-the-sudoers-file

script it to automatically run disablesleep 1 on plugin of hub and disablesleep 0 on unplug of hub

macOS boasts not one but two “automation” softwares. Automator and Shortcuts.

Funnily enough, NEITHER are actually capable of automation!

Alt Method

safer
doesn’t mess w sudoers

wrapper script which uses setuid

caveat of setuid in OSX,