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diff --git a/nixos/doc/manual/from_md/administration/user-sessions.chapter.xml b/nixos/doc/manual/from_md/administration/user-sessions.chapter.xml new file mode 100644 index 00000000000..e8c64f153fc --- /dev/null +++ b/nixos/doc/manual/from_md/administration/user-sessions.chapter.xml @@ -0,0 +1,46 @@ +<chapter xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-user-sessions"> + <title>User Sessions</title> + <para> + Systemd keeps track of all users who are logged into the system + (e.g. on a virtual console or remotely via SSH). The command + <literal>loginctl</literal> allows querying and manipulating user + sessions. For instance, to list all user sessions: + </para> + <programlisting> +$ loginctl + SESSION UID USER SEAT + c1 500 eelco seat0 + c3 0 root seat0 + c4 500 alice +</programlisting> + <para> + This shows that two users are logged in locally, while another is + logged in remotely. (<quote>Seats</quote> are essentially the + combinations of displays and input devices attached to the system; + usually, there is only one seat.) To get information about a + session: + </para> + <programlisting> +$ loginctl session-status c3 +c3 - root (0) + Since: Tue, 2013-01-08 01:17:56 CET; 4min 42s ago + Leader: 2536 (login) + Seat: seat0; vc3 + TTY: /dev/tty3 + Service: login; type tty; class user + State: online + CGroup: name=systemd:/user/root/c3 + ├─ 2536 /nix/store/10mn4xip9n7y9bxqwnsx7xwx2v2g34xn-shadow-4.1.5.1/bin/login -- + ├─10339 -bash + └─10355 w3m nixos.org +</programlisting> + <para> + This shows that the user is logged in on virtual console 3. It also + lists the processes belonging to this session. Since systemd keeps + track of this, you can terminate a session in a way that ensures + that all the session’s processes are gone: + </para> + <programlisting> +# loginctl terminate-session c3 +</programlisting> +</chapter> |