man/loginctl.xml

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   8   Copyright 2010 Lennart Poettering
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  23
  24 <refentry id="loginctl" conditional='ENABLE_LOGIND'
  25     xmlns:xi="http://www.w3.org/2001/XInclude">
  26
  27   <refentryinfo>
  28     <title>loginctl</title>
  29     <productname>systemd</productname>
  30
  31     <authorgroup>
  32       <author>
  33         <contrib>Developer</contrib>
  34         <firstname>Lennart</firstname>
  35         <surname>Poettering</surname>
  36         <email>lennart@poettering.net</email>
  37       </author>
  38     </authorgroup>
  39   </refentryinfo>
  40
  41   <refmeta>
  42     <refentrytitle>loginctl</refentrytitle>
  43     <manvolnum>1</manvolnum>
  44   </refmeta>
  45
  46   <refnamediv>
  47     <refname>loginctl</refname>
  48     <refpurpose>Control the systemd login manager</refpurpose>
  49   </refnamediv>
  50
  51   <refsynopsisdiv>
  52     <cmdsynopsis>
  53       <command>loginctl</command>
  54       <arg choice="opt" rep="repeat">OPTIONS</arg>
  55       <arg choice="req">COMMAND</arg>
  56       <arg choice="opt" rep="repeat">NAME</arg>
  57     </cmdsynopsis>
  58   </refsynopsisdiv>
  59
  60   <refsect1>
  61     <title>Description</title>
  62
  63     <para><command>loginctl</command> may be used to introspect and
  64     control the state of the
  65     <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  66     login manager
  67     <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
  68   </refsect1>
  69
  70   <refsect1>
  71     <title>Options</title>
  72
  73     <para>The following options are understood:</para>
  74
  75     <variablelist>
  76       <varlistentry>
  77         <term><option>--no-ask-password</option></term>
  78
  79         <listitem><para>Do not query the user for authentication for
  80         privileged operations.</para></listitem>
  81       </varlistentry>
  82
  83       <varlistentry>
  84         <term><option>-p</option></term>
  85         <term><option>--property=</option></term>
  86
  87         <listitem><para>When showing session/user/seat properties,
  88         limit display to certain properties as specified as argument.
  89         If not specified, all set properties are shown. The argument
  90         should be a property name, such as
  91         <literal>Sessions</literal>. If specified more than once, all
  92         properties with the specified names are
  93         shown.</para></listitem>
  94       </varlistentry>
  95
  96       <varlistentry>
  97         <term><option>--value</option></term>
  98
  99         <listitem>
 100           <para>When printing properties with <command>show</command>,
 101           only print the value, and skip the property name and
 102           <literal>=</literal>.</para>
 103         </listitem>
 104       </varlistentry>
 105
 106       <varlistentry>
 107         <term><option>-a</option></term>
 108         <term><option>--all</option></term>
 109
 110         <listitem><para>When showing session/user/seat properties,
 111         show all properties regardless of whether they are set or
 112         not.</para></listitem>
 113       </varlistentry>
 114
 115       <varlistentry>
 116         <term><option>-l</option></term>
 117         <term><option>--full</option></term>
 118
 119         <listitem><para>Do not ellipsize process tree entries.</para>
 120         </listitem>
 121       </varlistentry>
 122
 123       <varlistentry>
 124         <term><option>--kill-who=</option></term>
 125
 126         <listitem><para>When used with
 127         <command>kill-session</command>, choose which processes to
 128         kill. Must be one of <option>leader</option>, or
 129         <option>all</option> to select whether to kill only the leader
 130         process of the session or all processes of the session. If
 131         omitted, defaults to <option>all</option>.</para></listitem>
 132       </varlistentry>
 133
 134       <varlistentry>
 135         <term><option>-s</option></term>
 136         <term><option>--signal=</option></term>
 137
 138         <listitem><para>When used with <command>kill-session</command>
 139         or <command>kill-user</command>, choose which signal to send
 140         to selected processes. Must be one of the well known signal
 141         specifiers, such as <constant>SIGTERM</constant>,
 142         <constant>SIGINT</constant> or <constant>SIGSTOP</constant>.
 143         If omitted, defaults to
 144         <constant>SIGTERM</constant>.</para></listitem>
 145       </varlistentry>
 146
 147       <varlistentry>
 148         <term><option>-n</option></term>
 149         <term><option>--lines=</option></term>
 150
 151         <listitem><para>When used with <command>user-status</command>
 152         and <command>session-status</command>, controls the number of
 153         journal lines to show, counting from the most recent ones.
 154         Takes a positive integer argument. Defaults to 10.</para>
 155         </listitem>
 156       </varlistentry>
 157
 158       <varlistentry>
 159         <term><option>-o</option></term>
 160         <term><option>--output=</option></term>
 161
 162         <listitem><para>When used with <command>user-status</command>
 163         and <command>session-status</command>, controls the formatting
 164         of the journal entries that are shown. For the available
 165         choices, see
 166         <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
 167         Defaults to <literal>short</literal>.</para></listitem>
 168       </varlistentry>
 169
 170       <xi:include href="user-system-options.xml" xpointer="host" />
 171       <xi:include href="user-system-options.xml" xpointer="machine" />
 172
 173       <xi:include href="standard-options.xml" xpointer="no-pager" />
 174       <xi:include href="standard-options.xml" xpointer="no-legend" />
 175       <xi:include href="standard-options.xml" xpointer="help" />
 176       <xi:include href="standard-options.xml" xpointer="version" />
 177     </variablelist>
 178   </refsect1>
 179
 180   <refsect1>
 181     <title>Commands</title>
 182
 183     <para>The following commands are understood:</para>
 184
 185     <refsect2><title>Session Commands</title><variablelist>
 186
 187       <varlistentry>
 188         <term><command>list-sessions</command></term>
 189
 190         <listitem><para>List current sessions.</para></listitem>
 191       </varlistentry>
 192
 193       <varlistentry>
 194         <term><command>session-status</command> <optional><replaceable>ID</replaceable>…</optional></term>
 195
 196         <listitem><para>Show terse runtime status information about
 197         one or more sessions, followed by the most recent log data
 198         from the journal. Takes one or more session identifiers as
 199         parameters. If no session identifiers are passed, the status of
 200         the caller's session is shown. This function is intended to
 201         generate human-readable output. If you are looking for
 202         computer-parsable output, use <command>show-session</command>
 203         instead.</para></listitem>
 204       </varlistentry>
 205
 206       <varlistentry>
 207         <term><command>show-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
 208
 209         <listitem><para>Show properties of one or more sessions or the
 210         manager itself. If no argument is specified, properties of the
 211         manager will be shown. If a session ID is specified,
 212         properties of the session are shown. By default, empty
 213         properties are suppressed. Use <option>--all</option> to show
 214         those too. To select specific properties to show, use
 215         <option>--property=</option>. This command is intended to be
 216         used whenever computer-parsable output is required. Use
 217         <command>session-status</command> if you are looking for
 218         formatted human-readable output.</para></listitem>
 219       </varlistentry>
 220
 221       <varlistentry>
 222         <term><command>activate</command> <optional><replaceable>ID</replaceable></optional></term>
 223
 224         <listitem><para>Activate a session. This brings a session into
 225         the foreground if another session is currently in the
 226         foreground on the respective seat. Takes a session identifier
 227         as argument. If no argument is specified, the session of the
 228         caller is put into foreground.</para></listitem>
 229       </varlistentry>
 230
 231       <varlistentry>
 232         <term><command>lock-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
 233         <term><command>unlock-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
 234
 235         <listitem><para>Activates/deactivates the screen lock on one
 236         or more sessions, if the session supports it. Takes one or
 237         more session identifiers as arguments. If no argument is
 238         specified, the session of the caller is locked/unlocked.
 239         </para></listitem>
 240       </varlistentry>
 241
 242       <varlistentry>
 243         <term><command>lock-sessions</command></term>
 244         <term><command>unlock-sessions</command></term>
 245
 246         <listitem><para>Activates/deactivates the screen lock on all
 247         current sessions supporting it. </para></listitem>
 248       </varlistentry>
 249
 250       <varlistentry>
 251         <term><command>terminate-session</command> <replaceable>ID</replaceable>…</term>
 252
 253         <listitem><para>Terminates a session. This kills all processes
 254         of the session and deallocates all resources attached to the
 255         session. </para></listitem>
 256       </varlistentry>
 257
 258       <varlistentry>
 259         <term><command>kill-session</command> <replaceable>ID</replaceable>…</term>
 260
 261         <listitem><para>Send a signal to one or more processes of the
 262         session. Use <option>--kill-who=</option> to select which
 263         process to kill. Use <option>--signal=</option> to select the
 264         signal to send.</para></listitem>
 265       </varlistentry>
 266     </variablelist></refsect2>
 267
 268     <refsect2><title>User Commands</title><variablelist>
 269       <varlistentry>
 270         <term><command>list-users</command></term>
 271
 272         <listitem><para>List currently logged in users.
 273         </para></listitem>
 274       </varlistentry>
 275
 276       <varlistentry>
 277         <term><command>user-status</command> <optional><replaceable>USER</replaceable>…</optional></term>
 278
 279         <listitem><para>Show terse runtime status information about
 280         one or more logged in users, followed by the most recent log
 281         data from the journal. Takes one or more user names or numeric
 282         user IDs as parameters. If no parameters are passed, the status
 283         is shown for the user of the session of the caller. This
 284         function is intended to generate human-readable output. If you
 285         are looking for computer-parsable output, use
 286         <command>show-user</command> instead.</para></listitem>
 287       </varlistentry>
 288
 289       <varlistentry>
 290         <term><command>show-user</command> <optional><replaceable>USER</replaceable>…</optional></term>
 291
 292         <listitem><para>Show properties of one or more users or the
 293         manager itself. If no argument is specified, properties of the
 294         manager will be shown. If a user is specified, properties of
 295         the user are shown. By default, empty properties are
 296         suppressed. Use <option>--all</option> to show those too. To
 297         select specific properties to show, use
 298         <option>--property=</option>. This command is intended to be
 299         used whenever computer-parsable output is required. Use
 300         <command>user-status</command> if you are looking for
 301         formatted human-readable output.</para></listitem>
 302       </varlistentry>
 303
 304       <varlistentry>
 305         <term><command>enable-linger</command> <optional><replaceable>USER</replaceable>…</optional></term>
 306         <term><command>disable-linger</command> <optional><replaceable>USER</replaceable>…</optional></term>
 307
 308         <listitem><para>Enable/disable user lingering for one or more
 309         users. If enabled for a specific user, a user manager is
 310         spawned for the user at boot and kept around after logouts.
 311         This allows users who are not logged in to run long-running
 312         services. Takes one or more user names or numeric UIDs as
 313         argument. If no argument is specified, enables/disables
 314         lingering for the user of the session of the caller.</para>
 315
 316         <para>See also <varname>KillUserProcesses=</varname> setting in
 317         <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
 318         </para></listitem>
 319       </varlistentry>
 320
 321       <varlistentry>
 322         <term><command>terminate-user</command> <replaceable>USER</replaceable>…</term>
 323
 324         <listitem><para>Terminates all sessions of a user. This kills
 325         all processes of all sessions of the user and deallocates all
 326         runtime resources attached to the user.</para></listitem>
 327       </varlistentry>
 328
 329       <varlistentry>
 330         <term><command>kill-user</command> <replaceable>USER</replaceable>…</term>
 331
 332         <listitem><para>Send a signal to all processes of a user. Use
 333         <option>--signal=</option> to select the signal to send.
 334         </para></listitem>
 335       </varlistentry>
 336     </variablelist></refsect2>
 337
 338     <refsect2><title>Seat Commands</title><variablelist>
 339       <varlistentry>
 340         <term><command>list-seats</command></term>
 341
 342         <listitem><para>List currently available seats on the local
 343         system.</para></listitem>
 344       </varlistentry>
 345
 346       <varlistentry>
 347         <term><command>seat-status</command> <optional><replaceable>NAME</replaceable>…</optional></term>
 348
 349         <listitem><para>Show terse runtime status information about
 350         one or more seats. Takes one or more seat names as parameters.
 351         If no seat names are passed the status of the caller's
 352         session's seat is shown. This function is intended to generate
 353         human-readable output. If you are looking for
 354         computer-parsable output, use <command>show-seat</command>
 355         instead.</para></listitem>
 356       </varlistentry>
 357
 358       <varlistentry>
 359         <term><command>show-seat</command> <optional><replaceable>NAME</replaceable>…</optional></term>
 360
 361         <listitem><para>Show properties of one or more seats or the
 362         manager itself. If no argument is specified, properties of the
 363         manager will be shown. If a seat is specified, properties of
 364         the seat are shown. By default, empty properties are
 365         suppressed. Use <option>--all</option> to show those too. To
 366         select specific properties to show, use
 367         <option>--property=</option>. This command is intended to be
 368         used whenever computer-parsable output is required. Use
 369         <command>seat-status</command> if you are looking for
 370         formatted human-readable output.</para></listitem>
 371       </varlistentry>
 372
 373       <varlistentry>
 374         <term><command>attach</command> <replaceable>NAME</replaceable> <replaceable>DEVICE</replaceable>…</term>
 375
 376         <listitem><para>Persistently attach one or more devices to a
 377         seat. The devices should be specified via device paths in the
 378         <filename>/sys</filename> file system. To create a new seat,
 379         attach at least one graphics card to a previously unused seat
 380         name. Seat names may consist only of a–z, A–Z, 0–9,
 381         <literal>-</literal> and <literal>_</literal> and must be
 382         prefixed with <literal>seat</literal>. To drop assignment of a
 383         device to a specific seat, just reassign it to a different
 384         seat, or use <command>flush-devices</command>.
 385         </para></listitem>
 386       </varlistentry>
 387
 388       <varlistentry>
 389         <term><command>flush-devices</command></term>
 390
 391         <listitem><para>Removes all device assignments previously
 392         created with <command>attach</command>. After this call, only
 393         automatically generated seats will remain, and all seat
 394         hardware is assigned to them.</para></listitem>
 395       </varlistentry>
 396
 397       <varlistentry>
 398         <term><command>terminate-seat</command> <replaceable>NAME</replaceable>…</term>
 399
 400         <listitem><para>Terminates all sessions on a seat. This kills
 401         all processes of all sessions on the seat and deallocates all
 402         runtime resources attached to them.</para></listitem>
 403       </varlistentry>
 404     </variablelist></refsect2>
 405
 406   </refsect1>
 407
 408   <refsect1>
 409     <title>Exit status</title>
 410
 411     <para>On success, 0 is returned, a non-zero failure code
 412     otherwise.</para>
 413   </refsect1>
 414
 415   <refsect1>
 416     <title>Examples</title>
 417
 418     <example>
 419       <title>Querying user status</title>
 420
 421       <programlisting>$ loginctl user-status
 422 fatima (1005)
 423            Since: Sat 2016-04-09 14:23:31 EDT; 54min ago
 424            State: active
 425         Sessions: 5 *3
 426             Unit: user-1005.slice
 427                   ├─user@1005.service
 428                     …
 429                   ├─session-3.scope
 430                     …
 431                   └─session-5.scope
 432                     ├─3473 login -- fatima
 433                     └─3515 -zsh
 434
 435 Apr 09 14:40:30 laptop login[2325]: pam_unix(login:session):
 436                        session opened for user fatima by LOGIN(uid=0)
 437 Apr 09 14:40:30 laptop login[2325]: LOGIN ON tty3 BY fatima
 438 </programlisting>
 439
 440       <para>There are two sessions, 3 and 5. Session 3 is a graphical session,
 441       marked with a star. The tree of processing including the two corresponding
 442       scope units and the user manager unit are shown.</para>
 443     </example>
 444   </refsect1>
 445
 446   <xi:include href="less-variables.xml" />
 447
 448   <refsect1>
 449     <title>See Also</title>
 450     <para>
 451       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 452       <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 453       <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 454       <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 455     </para>
 456   </refsect1>
 457
 458 </refentry>