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.</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
 114                         <varlistentry>
 115                                 <term><option>--no-pager</option></term>
 116
 117                                 <listitem><para>Do not pipe output into a
 118                                 pager.</para></listitem>
 119                         </varlistentry>
 120
 121                         <varlistentry>
 122                                 <term><option>--no-ask-password</option></term>
 123
 124                                 <listitem><para>Don't query the user
 125                                 for authentication for privileged
 126                                 operations.</para></listitem>
 127                         </varlistentry>
 128
 129                         <varlistentry>
 130                                 <term><option>--kill-who=</option></term>
 131
 132                                 <listitem><para>When used with
 133                                 <command>kill-session</command>,
 134                                 choose which processes to kill. Must
 135                                 be one of <option>leader</option>, or
 136                                 <option>all</option> to select whether
 137                                 to kill only the leader process of the
 138                                 session or all processes of the
 139                                 session. If omitted defaults to
 140                                 <option>all</option>.</para></listitem>
 141                         </varlistentry>
 142
 143                         <varlistentry>
 144                                 <term><option>--signal=</option></term>
 145                                 <term><option>-s</option></term>
 146
 147                                 <listitem><para>When used with
 148                                 <command>kill-session</command> or
 149                                 <command>kill-user</command>, choose
 150                                 which signal to send to selected
 151                                 processes. Must be one of the well
 152                                 known signal specifiers such as
 153                                 SIGTERM, SIGINT or SIGSTOP. If omitted
 154                                 defaults to
 155                                 <option>SIGTERM</option>.</para></listitem>
 156                         </varlistentry>
 157
 158                         <varlistentry>
 159                                 <term><option>-H</option></term>
 160                                 <term><option>--host</option></term>
 161
 162                                 <listitem><para>Execute operation
 163                                 remotely. Specify a hostname, or
 164                                 username and hostname separated by @,
 165                                 to connect to. This will use SSH to
 166                                 talk to the remote login manager
 167                                 instance.</para></listitem>
 168                         </varlistentry>
 169
 170                         <varlistentry>
 171                                 <term><option>-P</option></term>
 172                                 <term><option>--privileged</option></term>
 173
 174                                 <listitem><para>Acquire privileges via
 175                                 PolicyKit before executing the
 176                                 operation.</para></listitem>
 177                         </varlistentry>
 178                 </variablelist>
 179
 180                 <para>The following commands are understood:</para>
 181
 182                 <variablelist>
 183                         <varlistentry>
 184                                 <term><command>list-sessions</command></term>
 185
 186                                 <listitem><para>List current sessions.</para></listitem>
 187                         </varlistentry>
 188
 189                         <varlistentry>
 190                                 <term><command>session-status [ID...]</command></term>
 191
 192                                 <listitem><para>Show terse runtime
 193                                 status information about one or more
 194                                 sessions. This function is intended to
 195                                 generate human-readable output. If you
 196                                 are looking for computer-parsable
 197                                 output, use
 198                                 <command>show-session</command>
 199                                 instead.</para></listitem>
 200                         </varlistentry>
 201
 202                         <varlistentry>
 203                                 <term><command>show-session [ID...]</command></term>
 204
 205                                 <listitem><para>Show properties of one
 206                                 or more sessions or the manager
 207                                 itself. If no argument is specified
 208                                 properties of the manager will be
 209                                 shown. If a session ID is specified
 210                                 properties of the session is shown. By
 211                                 default, empty properties are
 212                                 suppressed. Use <option>--all</option>
 213                                 to show those too. To select specific
 214                                 properties to show use
 215                                 <option>--property=</option>. This
 216                                 command is intended to be used
 217                                 whenever computer-parsable output is
 218                                 required. Use
 219                                 <command>session-status</command> if
 220                                 you are looking for formatted
 221                                 human-readable
 222                                 output.</para></listitem>
 223                         </varlistentry>
 224
 225                         <varlistentry>
 226                                 <term><command>activate [ID...]</command></term>
 227
 228                                 <listitem><para>Activate one or more
 229                                 sessions. This brings one or more
 230                                 sessions into the foreground, if
 231                                 another session is currently in the
 232                                 foreground on the respective
 233                                 seat.</para></listitem>
 234                         </varlistentry>
 235
 236                         <varlistentry>
 237                                 <term><command>lock-session [ID...]</command></term>
 238                                 <term><command>unlock-session [ID...]</command></term>
 239
 240                                 <listitem><para>Activates/deactivates
 241                                 the screen lock on one or more
 242                                 sessions, if the session supports it.</para></listitem>
 243                         </varlistentry>
 244
 245                         <varlistentry>
 246                                 <term><command>terminate-session [ID...]</command></term>
 247
 248                                 <listitem><para>Terminates a
 249                                 session. This kills all processes of
 250                                 the session and deallocates all
 251                                 resources attached to the
 252                                 session.</para></listitem>
 253                         </varlistentry>
 254
 255                         <varlistentry>
 256                                 <term><command>kill-session [ID...]</command></term>
 257
 258                                 <listitem><para>Send a signal to one
 259                                 or more processes of the session. Use
 260                                 <option>--kill-who=</option> to select
 261                                 which process to kill. Use
 262                                 <option>--signal=</option> to select
 263                                 the signal to send.</para></listitem>
 264                         </varlistentry>
 265
 266                         <varlistentry>
 267                                 <term><command>list-users</command></term>
 268
 269                                 <listitem><para>List currently logged
 270                                 in users.</para></listitem>
 271                         </varlistentry>
 272
 273                         <varlistentry>
 274                                 <term><command>user-status [USER...]</command></term>
 275
 276                                 <listitem><para>Show terse runtime
 277                                 status information about one or more
 278                                 logged in users. This function is
 279                                 intended to generate human-readable
 280                                 output. If you are looking for
 281                                 computer-parsable output, use
 282                                 <command>show-user</command>
 283                                 instead. Users may be specified by
 284                                 their usernames or numeric user
 285                                 IDs.</para></listitem>
 286                         </varlistentry>
 287
 288                         <varlistentry>
 289                                 <term><command>show-user [USER...]</command></term>
 290
 291                                 <listitem><para>Show properties of one
 292                                 or more users or the manager
 293                                 itself. If no argument is specified
 294                                 properties of the manager will be
 295                                 shown. If a user is specified
 296                                 properties of the user is shown. By
 297                                 default, empty properties are
 298                                 suppressed. Use <option>--all</option>
 299                                 to show those too. To select specific
 300                                 properties to show use
 301                                 <option>--property=</option>. This
 302                                 command is intended to be used
 303                                 whenever computer-parsable output is
 304                                 required. Use
 305                                 <command>user-status</command> if
 306                                 you are looking for formatted
 307                                 human-readable
 308                                 output.</para></listitem>
 309                         </varlistentry>
 310
 311                         <varlistentry>
 312                                 <term><command>enable-linger [USER...]</command></term>
 313                                 <term><command>disable-linger [USER...]</command></term>
 314
 315                                 <listitem><para>Enable/disable user
 316                                 lingering for one or more users. If
 317                                 enabled for a specific user a user
 318                                 manager is spawned for him/her at
 319                                 boot, and kept around after
 320                                 logouts. This allows users who aren't
 321                                 logged in to run long-running
 322                                 services.</para></listitem>
 323                         </varlistentry>
 324
 325                         <varlistentry>
 326                                 <term><command>terminate-user [USER...]</command></term>
 327
 328                                 <listitem><para>Terminates all
 329                                 sessions of a user. This kills all
 330                                 processes of all sessions of the user
 331                                 and deallocates all runtime resources
 332                                 attached to the
 333                                 user.</para></listitem>
 334                         </varlistentry>
 335
 336                         <varlistentry>
 337                                 <term><command>kill-user [USER...]</command></term>
 338
 339                                 <listitem><para>Send a signal to all
 340                                 processes of a user. Use
 341                                 <option>--signal=</option> to select
 342                                 the signal to send.</para></listitem>
 343                         </varlistentry>
 344
 345                         <varlistentry>
 346                                 <term><command>list-seats</command></term>
 347
 348                                 <listitem><para>List currently
 349                                 available seats on the local
 350                                 system.</para></listitem>
 351                         </varlistentry>
 352
 353                         <varlistentry>
 354                                 <term><command>seat-status [NAME...]</command></term>
 355
 356                                 <listitem><para>Show terse runtime
 357                                 status information about one or more
 358                                 seats. This function is
 359                                 intended to generate human-readable
 360                                 output. If you are looking for
 361                                 computer-parsable output, use
 362                                 <command>show-seat</command>
 363                                 instead.</para></listitem>
 364                         </varlistentry>
 365
 366                         <varlistentry>
 367                                 <term><command>show-seat [NAME...]</command></term>
 368
 369                                 <listitem><para>Show properties of one
 370                                 or more seats or the manager
 371                                 itself. If no argument is specified
 372                                 properties of the manager will be
 373                                 shown. If a seat is specified
 374                                 properties of the seat are shown. By
 375                                 default, empty properties are
 376                                 suppressed. Use <option>--all</option>
 377                                 to show those too. To select specific
 378                                 properties to show use
 379                                 <option>--property=</option>. This
 380                                 command is intended to be used
 381                                 whenever computer-parsable output is
 382                                 required. Use
 383                                 <command>seat-status</command> if you
 384                                 are looking for formatted
 385                                 human-readable
 386                                 output.</para></listitem>
 387                         </varlistentry>
 388
 389                         <varlistentry>
 390                                 <term><command>attach [NAME] [DEVICE...]</command></term>
 391
 392                                 <listitem><para>Attach one or more
 393                                 devices to a seat. The devices should
 394                                 be specified via device paths in the
 395                                 <filename>/sys</filename> file
 396                                 system. To create a new seat attach at
 397                                 least one graphics card to a
 398                                 previously unused seat names. seat
 399                                 names may consist only of a-z, A-Z,
 400                                 0-9, "-" and "_" and must be prefixed
 401                                 with "seat". To drop assignment of a
 402                                 device to a specific seat just
 403                                 reassign it to a different seat, or
 404                                 use
 405                                 <command>flush-devices</command>.</para></listitem>
 406                         </varlistentry>
 407
 408                         <varlistentry>
 409                                 <term><command>flush-devices</command></term>
 410
 411                                 <listitem><para>Removes all device
 412                                 assignments previously created with
 413                                 <command>attach</command>. After this
 414                                 call only automatically generated
 415                                 seats will remain and all seat
 416                                 hardware is assigned to
 417                                 them.</para></listitem>
 418                         </varlistentry>
 419
 420                         <varlistentry>
 421                                 <term><command>terminate-seat [NAME...]</command></term>
 422
 423                                 <listitem><para>Terminates all
 424                                 sessions on a seat. This kills all
 425                                 processes of all sessions on a seat and
 426                                 deallocates all runtime resources
 427                                 attached to them.</para></listitem>
 428                         </varlistentry>
 429                 </variablelist>
 430
 431         </refsect1>
 432
 433         <refsect1>
 434                 <title>Exit status</title>
 435
 436                 <para>On success 0 is returned, a non-zero failure
 437                 code otherwise.</para>
 438         </refsect1>
 439
 440         <refsect1>
 441                 <title>Environment</title>
 442
 443                 <variablelist>
 444                         <varlistentry>
 445                                 <term><varname>$SYSTEMD_PAGER</varname></term>
 446                                 <listitem><para>Pager to use when
 447                                 <option>--no-pager</option> is not given;
 448                                 overrides <varname>$PAGER</varname>.  Setting
 449                                 this to an empty string or the value
 450                                 <literal>cat</literal> is equivalent to passing
 451                                 <option>--no-pager</option>.</para></listitem>
 452                         </varlistentry>
 453                 </variablelist>
 454         </refsect1>
 455
 456         <refsect1>
 457                 <title>See Also</title>
 458                 <para>
 459                         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 460                         <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 461                         <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 462                 </para>
 463         </refsect1>
 464
 465 </refentry>