startup_r1 Add a warning about needing to restart the entire login sess…
E.g. for a GUI session, ~/.profile is executed by the GUI login "shell" at its startup
so one needs to fully log out and log back in.
Before that, the change would only be seen by shells explicitly started as login shells.
AMD64
Xcode: xcode11.6 C
Git
PYTHON_BUILD_VERSION=3.9.1