<para>Environment variables exported by the user manager (<command>systemd --user</command> instance

started in the <filename>user@<replaceable>uid</replaceable>.service</filename> system service) apply to

any services started by that manager. In particular, this may include services which run user shells. For

<filename>gnome-terminal-server.service</filename> user unit, which in turn runs the user shell, so that

shell will inherit environment variables exported by the user manager. For other instances of the shell,

not launched by the user manager, the environment they inherit is defined by the program that starts