man/loginctl.xml

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   8   Copyright 2010 Lennart Poettering
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  23
  24 <refentry id="loginctl">
  25
  26         <refentryinfo>
  27                 <title>loginctl</title>
  28                 <productname>systemd</productname>
  29
  30                 <authorgroup>
  31                         <author>
  32                                 <contrib>Developer</contrib>
  33                                 <firstname>Lennart</firstname>
  34                                 <surname>Poettering</surname>
  35                                 <email>lennart@poettering.net</email>
  36                         </author>
  37                 </authorgroup>
  38         </refentryinfo>
  39
  40         <refmeta>
  41                 <refentrytitle>loginctl</refentrytitle>
  42                 <manvolnum>1</manvolnum>
  43         </refmeta>
  44
  45         <refnamediv>
  46                 <refname>loginctl</refname>
  47                 <refpurpose>Control the systemd login manager</refpurpose>
  48         </refnamediv>
  49
  50         <refsynopsisdiv>
  51                 <cmdsynopsis>
  52                         <command>loginctl <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="req">COMMAND</arg> <arg choice="opt" rep="repeat">NAME</arg></command>
  53                 </cmdsynopsis>
  54         </refsynopsisdiv>
  55
  56         <refsect1>
  57                 <title>Description</title>
  58
  59                 <para><command>loginctl</command> may be used to
  60                 introspect and control the state of the
  61                 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  62                 login manager <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
  63         </refsect1>
  64
  65         <refsect1>
  66                 <title>Options</title>
  67
  68                 <para>The following options are understood:</para>
  69
  70                 <variablelist>
  71                         <varlistentry>
  72                                 <term><option>--help</option></term>
  73                                 <term><option>-h</option></term>
  74
  75                                 <listitem><para>Prints a short help
  76                                 text and exits.</para></listitem>
  77                         </varlistentry>
  78
  79                         <varlistentry>
  80                                 <term><option>--version</option></term>
  81
  82                                 <listitem><para>Prints a short version
  83                                 string and exits.</para></listitem>
  84                         </varlistentry>
  85
  86                         <varlistentry>
  87                                 <term><option>--property=</option></term>
  88                                 <term><option>-p</option></term>
  89
  90                                 <listitem><para>When showing
  91                                 session/user properties, limit
  92                                 display to certain properties as
  93                                 specified as argument. If not
  94                                 specified all set properties are
  95                                 shown. The argument should be a
  96                                 property name, such as
  97                                 <literal>Sessions</literal>. If
  98                                 specified more than once all
  99                                 properties with the specified names
 100                                 are shown.</para></listitem>
 101                         </varlistentry>
 102
 103                         <varlistentry>
 104                                 <term><option>--all</option></term>
 105                                 <term><option>-a</option></term>
 106
 107                                 <listitem><para>When showing
 108                                 unit/job/manager properties, show all
 109                                 properties regardless whether they are
 110                                 set or not.</para></listitem>
 111                         </varlistentry>
 112
 113                         <varlistentry>
 114                                 <term><option>--full</option></term>
 115
 116                                 <listitem><para>Do not ellipsize cgroup
 117                                 members.</para>
 118                                 </listitem>
 119                         </varlistentry>
 120
 121                         <varlistentry>
 122                                 <term><option>--no-pager</option></term>
 123
 124                                 <listitem><para>Do not pipe output into a
 125                                 pager.</para></listitem>
 126                         </varlistentry>
 127
 128                         <varlistentry>
 129                                 <term><option>--no-ask-password</option></term>
 130
 131                                 <listitem><para>Don't query the user
 132                                 for authentication for privileged
 133                                 operations.</para></listitem>
 134                         </varlistentry>
 135
 136                         <varlistentry>
 137                                 <term><option>--kill-who=</option></term>
 138
 139                                 <listitem><para>When used with
 140                                 <command>kill-session</command>,
 141                                 choose which processes to kill. Must
 142                                 be one of <option>leader</option>, or
 143                                 <option>all</option> to select whether
 144                                 to kill only the leader process of the
 145                                 session or all processes of the
 146                                 session. If omitted defaults to
 147                                 <option>all</option>.</para></listitem>
 148                         </varlistentry>
 149
 150                         <varlistentry>
 151                                 <term><option>--signal=</option></term>
 152                                 <term><option>-s</option></term>
 153
 154                                 <listitem><para>When used with
 155                                 <command>kill-session</command> or
 156                                 <command>kill-user</command>, choose
 157                                 which signal to send to selected
 158                                 processes. Must be one of the well
 159                                 known signal specifiers such as
 160                                 SIGTERM, SIGINT or SIGSTOP. If omitted
 161                                 defaults to
 162                                 <option>SIGTERM</option>.</para></listitem>
 163                         </varlistentry>
 164
 165                         <varlistentry>
 166                                 <term><option>-H</option></term>
 167                                 <term><option>--host</option></term>
 168
 169                                 <listitem><para>Execute operation
 170                                 remotely. Specify a hostname, or
 171                                 username and hostname separated by @,
 172                                 to connect to. This will use SSH to
 173                                 talk to the remote login manager
 174                                 instance.</para></listitem>
 175                         </varlistentry>
 176
 177                         <varlistentry>
 178                                 <term><option>-P</option></term>
 179                                 <term><option>--privileged</option></term>
 180
 181                                 <listitem><para>Acquire privileges via
 182                                 PolicyKit before executing the
 183                                 operation.</para></listitem>
 184                         </varlistentry>
 185                 </variablelist>
 186
 187                 <para>The following commands are understood:</para>
 188
 189                 <variablelist>
 190                         <varlistentry>
 191                                 <term><command>list-sessions</command></term>
 192
 193                                 <listitem><para>List current sessions.</para></listitem>
 194                         </varlistentry>
 195
 196                         <varlistentry>
 197                                 <term><command>session-status [ID...]</command></term>
 198
 199                                 <listitem><para>Show terse runtime
 200                                 status information about one or more
 201                                 sessions. This function is intended to
 202                                 generate human-readable output. If you
 203                                 are looking for computer-parsable
 204                                 output, use
 205                                 <command>show-session</command>
 206                                 instead.</para></listitem>
 207                         </varlistentry>
 208
 209                         <varlistentry>
 210                                 <term><command>show-session [ID...]</command></term>
 211
 212                                 <listitem><para>Show properties of one
 213                                 or more sessions or the manager
 214                                 itself. If no argument is specified
 215                                 properties of the manager will be
 216                                 shown. If a session ID is specified
 217                                 properties of the session is shown. By
 218                                 default, empty properties are
 219                                 suppressed. Use <option>--all</option>
 220                                 to show those too. To select specific
 221                                 properties to show use
 222                                 <option>--property=</option>. This
 223                                 command is intended to be used
 224                                 whenever computer-parsable output is
 225                                 required. Use
 226                                 <command>session-status</command> if
 227                                 you are looking for formatted
 228                                 human-readable
 229                                 output.</para></listitem>
 230                         </varlistentry>
 231
 232                         <varlistentry>
 233                                 <term><command>activate [ID...]</command></term>
 234
 235                                 <listitem><para>Activate one or more
 236                                 sessions. This brings one or more
 237                                 sessions into the foreground, if
 238                                 another session is currently in the
 239                                 foreground on the respective
 240                                 seat.</para></listitem>
 241                         </varlistentry>
 242
 243                         <varlistentry>
 244                                 <term><command>lock-session [ID...]</command></term>
 245                                 <term><command>unlock-session [ID...]</command></term>
 246
 247                                 <listitem><para>Activates/deactivates
 248                                 the screen lock on one or more
 249                                 sessions, if the session supports it.</para></listitem>
 250                         </varlistentry>
 251
 252                         <varlistentry>
 253                                 <term><command>lock-sessions</command></term>
 254                                 <term><command>unlock-sessions</command></term>
 255
 256                                 <listitem><para>Activates/deactivates
 257                                 the screen lock on all current
 258                                 sessions supporting
 259                                 it.</para></listitem>
 260                         </varlistentry>
 261
 262                         <varlistentry>
 263                                 <term><command>terminate-session [ID...]</command></term>
 264
 265                                 <listitem><para>Terminates a
 266                                 session. This kills all processes of
 267                                 the session and deallocates all
 268                                 resources attached to the
 269                                 session.</para></listitem>
 270                         </varlistentry>
 271
 272                         <varlistentry>
 273                                 <term><command>kill-session [ID...]</command></term>
 274
 275                                 <listitem><para>Send a signal to one
 276                                 or more processes of the session. Use
 277                                 <option>--kill-who=</option> to select
 278                                 which process to kill. Use
 279                                 <option>--signal=</option> to select
 280                                 the signal to send.</para></listitem>
 281                         </varlistentry>
 282
 283                         <varlistentry>
 284                                 <term><command>list-users</command></term>
 285
 286                                 <listitem><para>List currently logged
 287                                 in users.</para></listitem>
 288                         </varlistentry>
 289
 290                         <varlistentry>
 291                                 <term><command>user-status [USER...]</command></term>
 292
 293                                 <listitem><para>Show terse runtime
 294                                 status information about one or more
 295                                 logged in users. This function is
 296                                 intended to generate human-readable
 297                                 output. If you are looking for
 298                                 computer-parsable output, use
 299                                 <command>show-user</command>
 300                                 instead. Users may be specified by
 301                                 their usernames or numeric user
 302                                 IDs.</para></listitem>
 303                         </varlistentry>
 304
 305                         <varlistentry>
 306                                 <term><command>show-user [USER...]</command></term>
 307
 308                                 <listitem><para>Show properties of one
 309                                 or more users or the manager
 310                                 itself. If no argument is specified
 311                                 properties of the manager will be
 312                                 shown. If a user is specified
 313                                 properties of the user is shown. By
 314                                 default, empty properties are
 315                                 suppressed. Use <option>--all</option>
 316                                 to show those too. To select specific
 317                                 properties to show use
 318                                 <option>--property=</option>. This
 319                                 command is intended to be used
 320                                 whenever computer-parsable output is
 321                                 required. Use
 322                                 <command>user-status</command> if
 323                                 you are looking for formatted
 324                                 human-readable
 325                                 output.</para></listitem>
 326                         </varlistentry>
 327
 328                         <varlistentry>
 329                                 <term><command>enable-linger [USER...]</command></term>
 330                                 <term><command>disable-linger [USER...]</command></term>
 331
 332                                 <listitem><para>Enable/disable user
 333                                 lingering for one or more users. If
 334                                 enabled for a specific user a user
 335                                 manager is spawned for him/her at
 336                                 boot, and kept around after
 337                                 logouts. This allows users who aren't
 338                                 logged in to run long-running
 339                                 services.</para></listitem>
 340                         </varlistentry>
 341
 342                         <varlistentry>
 343                                 <term><command>terminate-user [USER...]</command></term>
 344
 345                                 <listitem><para>Terminates all
 346                                 sessions of a user. This kills all
 347                                 processes of all sessions of the user
 348                                 and deallocates all runtime resources
 349                                 attached to the
 350                                 user.</para></listitem>
 351                         </varlistentry>
 352
 353                         <varlistentry>
 354                                 <term><command>kill-user [USER...]</command></term>
 355
 356                                 <listitem><para>Send a signal to all
 357                                 processes of a user. Use
 358                                 <option>--signal=</option> to select
 359                                 the signal to send.</para></listitem>
 360                         </varlistentry>
 361
 362                         <varlistentry>
 363                                 <term><command>list-seats</command></term>
 364
 365                                 <listitem><para>List currently
 366                                 available seats on the local
 367                                 system.</para></listitem>
 368                         </varlistentry>
 369
 370                         <varlistentry>
 371                                 <term><command>seat-status [NAME...]</command></term>
 372
 373                                 <listitem><para>Show terse runtime
 374                                 status information about one or more
 375                                 seats. This function is
 376                                 intended to generate human-readable
 377                                 output. If you are looking for
 378                                 computer-parsable output, use
 379                                 <command>show-seat</command>
 380                                 instead.</para></listitem>
 381                         </varlistentry>
 382
 383                         <varlistentry>
 384                                 <term><command>show-seat [NAME...]</command></term>
 385
 386                                 <listitem><para>Show properties of one
 387                                 or more seats or the manager
 388                                 itself. If no argument is specified
 389                                 properties of the manager will be
 390                                 shown. If a seat is specified
 391                                 properties of the seat are shown. By
 392                                 default, empty properties are
 393                                 suppressed. Use <option>--all</option>
 394                                 to show those too. To select specific
 395                                 properties to show use
 396                                 <option>--property=</option>. This
 397                                 command is intended to be used
 398                                 whenever computer-parsable output is
 399                                 required. Use
 400                                 <command>seat-status</command> if you
 401                                 are looking for formatted
 402                                 human-readable
 403                                 output.</para></listitem>
 404                         </varlistentry>
 405
 406                         <varlistentry>
 407                                 <term><command>attach [NAME] [DEVICE...]</command></term>
 408
 409                                 <listitem><para>Persistently attach
 410                                 one or more devices to a seat. The
 411                                 devices should be specified via device
 412                                 paths in the <filename>/sys</filename>
 413                                 file system. To create a new seat
 414                                 attach at least one graphics card to a
 415                                 previously unused seat name. Seat
 416                                 names may consist only of a-z, A-Z,
 417                                 0-9, "-" and "_" and must be prefixed
 418                                 with "seat". To drop assignment of a
 419                                 device to a specific seat just
 420                                 reassign it to a different seat, or
 421                                 use
 422                                 <command>flush-devices</command>.</para></listitem>
 423                         </varlistentry>
 424
 425                         <varlistentry>
 426                                 <term><command>flush-devices</command></term>
 427
 428                                 <listitem><para>Removes all device
 429                                 assignments previously created with
 430                                 <command>attach</command>. After this
 431                                 call only automatically generated
 432                                 seats will remain and all seat
 433                                 hardware is assigned to
 434                                 them.</para></listitem>
 435                         </varlistentry>
 436
 437                         <varlistentry>
 438                                 <term><command>terminate-seat [NAME...]</command></term>
 439
 440                                 <listitem><para>Terminates all
 441                                 sessions on a seat. This kills all
 442                                 processes of all sessions on a seat and
 443                                 deallocates all runtime resources
 444                                 attached to them.</para></listitem>
 445                         </varlistentry>
 446                 </variablelist>
 447
 448         </refsect1>
 449
 450         <refsect1>
 451                 <title>Exit status</title>
 452
 453                 <para>On success 0 is returned, a non-zero failure
 454                 code otherwise.</para>
 455         </refsect1>
 456
 457         <refsect1>
 458                 <title>Environment</title>
 459
 460                 <variablelist class='environment-variables'>
 461                         <varlistentry>
 462                                 <term><varname>$SYSTEMD_PAGER</varname></term>
 463                                 <listitem><para>Pager to use when
 464                                 <option>--no-pager</option> is not given;
 465                                 overrides <varname>$PAGER</varname>.  Setting
 466                                 this to an empty string or the value
 467                                 <literal>cat</literal> is equivalent to passing
 468                                 <option>--no-pager</option>.</para></listitem>
 469                         </varlistentry>
 470                 </variablelist>
 471         </refsect1>
 472
 473         <refsect1>
 474                 <title>See Also</title>
 475                 <para>
 476                         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 477                         <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 478                         <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 479                         <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 480                 </para>
 481         </refsect1>
 482
 483 </refentry>