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# User Sessions {#sec-user-sessions} |
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|
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Systemd keeps track of all users who are logged into the system (e.g. on |
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a virtual console or remotely via SSH). The command `loginctl` allows |
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querying and manipulating user sessions. For instance, to list all user |
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sessions: |
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|
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```ShellSession |
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$ loginctl |
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SESSION UID USER SEAT |
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c1 500 eelco seat0 |
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c3 0 root seat0 |
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c4 500 alice |
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``` |
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|
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This shows that two users are logged in locally, while another is logged |
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in remotely. ("Seats" are essentially the combinations of displays and |
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input devices attached to the system; usually, there is only one seat.) |
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To get information about a session: |
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|
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```ShellSession |
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$ loginctl session-status c3 |
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c3 - root (0) |
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Since: Tue, 2013-01-08 01:17:56 CET; 4min 42s ago |
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Leader: 2536 (login) |
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Seat: seat0; vc3 |
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TTY: /dev/tty3 |
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Service: login; type tty; class user |
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State: online |
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CGroup: name=systemd:/user/root/c3 |
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├─ 2536 /nix/store/10mn4xip9n7y9bxqwnsx7xwx2v2g34xn-shadow-4.1.5.1/bin/login -- |
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├─10339 -bash |
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└─10355 w3m nixos.org |
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``` |
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|
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This shows that the user is logged in on virtual console 3. It also |
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lists the processes belonging to this session. Since systemd keeps track |
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of this, you can terminate a session in a way that ensures that all the |
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session's processes are gone: |
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|
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```ShellSession |
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# loginctl terminate-session c3 |
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``` |
@ -1,45 +0,0 @@ |
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<chapter xmlns="http://docbook.org/ns/docbook" |
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xmlns:xlink="http://www.w3.org/1999/xlink" |
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xmlns:xi="http://www.w3.org/2001/XInclude" |
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version="5.0" |
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xml:id="sec-user-sessions"> |
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<title>User Sessions</title> |
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<para> |
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Systemd keeps track of all users who are logged into the system (e.g. on a |
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virtual console or remotely via SSH). The command <command>loginctl</command> |
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allows querying and manipulating user sessions. For instance, to list all |
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user sessions: |
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<screen> |
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<prompt>$ </prompt>loginctl |
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SESSION UID USER SEAT |
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c1 500 eelco seat0 |
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c3 0 root seat0 |
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c4 500 alice |
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</screen> |
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This shows that two users are logged in locally, while another is logged in |
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remotely. (“Seats” are essentially the combinations of displays and input |
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devices attached to the system; usually, there is only one seat.) To get |
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information about a session: |
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<screen> |
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<prompt>$ </prompt>loginctl session-status c3 |
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c3 - root (0) |
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Since: Tue, 2013-01-08 01:17:56 CET; 4min 42s ago |
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Leader: 2536 (login) |
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Seat: seat0; vc3 |
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TTY: /dev/tty3 |
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Service: login; type tty; class user |
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State: online |
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CGroup: name=systemd:/user/root/c3 |
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├─ 2536 /nix/store/10mn4xip9n7y9bxqwnsx7xwx2v2g34xn-shadow-4.1.5.1/bin/login -- |
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├─10339 -bash |
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└─10355 w3m nixos.org |
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</screen> |
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This shows that the user is logged in on virtual console 3. It also lists the |
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processes belonging to this session. Since systemd keeps track of this, you |
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can terminate a session in a way that ensures that all the session’s |
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processes are gone: |
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<screen> |
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<prompt># </prompt>loginctl terminate-session c3 |
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</screen> |
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</para> |
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</chapter> |
@ -0,0 +1,46 @@ |
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<chapter xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-user-sessions"> |
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<title>User Sessions</title> |
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<para> |
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Systemd keeps track of all users who are logged into the system |
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(e.g. on a virtual console or remotely via SSH). The command |
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<literal>loginctl</literal> allows querying and manipulating user |
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sessions. For instance, to list all user sessions: |
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</para> |
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<programlisting> |
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$ loginctl |
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SESSION UID USER SEAT |
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c1 500 eelco seat0 |
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c3 0 root seat0 |
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c4 500 alice |
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</programlisting> |
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<para> |
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This shows that two users are logged in locally, while another is |
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logged in remotely. (<quote>Seats</quote> are essentially the |
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combinations of displays and input devices attached to the system; |
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usually, there is only one seat.) To get information about a |
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session: |
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</para> |
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<programlisting> |
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$ loginctl session-status c3 |
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c3 - root (0) |
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Since: Tue, 2013-01-08 01:17:56 CET; 4min 42s ago |
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Leader: 2536 (login) |
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Seat: seat0; vc3 |
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TTY: /dev/tty3 |
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Service: login; type tty; class user |
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State: online |
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CGroup: name=systemd:/user/root/c3 |
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├─ 2536 /nix/store/10mn4xip9n7y9bxqwnsx7xwx2v2g34xn-shadow-4.1.5.1/bin/login -- |
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├─10339 -bash |
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└─10355 w3m nixos.org |
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</programlisting> |
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<para> |
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This shows that the user is logged in on virtual console 3. It also |
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lists the processes belonging to this session. Since systemd keeps |
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track of this, you can terminate a session in a way that ensures |
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that all the session’s processes are gone: |
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</para> |
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<programlisting> |
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# loginctl terminate-session c3 |
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</programlisting> |
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</chapter> |
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