How to Set Environment Variables in Mac

in the written direction I think we are missing a '>>'
just saying

"and that's it".. and that's what lol you literally didn't say anything

he was in a hurry .,, no time to tell what to do with the file

how do you now properly update the environment.plist file? that wasn't covered

echo "" .MacOSX/environment.plist -> echo "" > .MacOSX/environment.plist

worked

Won't work on OS X Mountain Lion or previous.
launchd.conf is the new mandate from Apple.

Didn't work.