EnvPane is a preference pane for Mac OS X (10.8 or newer) that lets you set environment variables for all applications, both GUI and terminal. Not only does it restore support for `~/.MacOSX/environment.plist` (see [Background](#background)), it also publishes your changes to the environment immediately, without the need to log out and back in. This works for changes made by manually editing `~/.MacOSX/environment.plist` as well via the preference pane UI.
Comments