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   1 <?xml version="1.0" encoding="UTF-8"?>
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   3    Copyright (c) 1991 - 1993, Julianne Frances Haugh
   4    Copyright (c) 1991 - 1993, Chip Rosenthal
   5    Copyright (c) 2007 - 2009, Nicolas François
   6    All rights reserved.
   7
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   9    modification, are permitted provided that the following conditions
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  12       notice, this list of conditions and the following disclaimer.
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  15       documentation and/or other materials provided with the distribution.
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  17       endorse or promote products derived from this software without
  18       specific prior written permission.
  19
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  32 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.5//EN"
  33   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  34 <!ENTITY CHFN_AUTH             SYSTEM "login.defs.d/CHFN_AUTH.xml">
  35 <!ENTITY CHFN_RESTRICT         SYSTEM "login.defs.d/CHFN_RESTRICT.xml">
  36 <!ENTITY CHSH_AUTH             SYSTEM "login.defs.d/CHSH_AUTH.xml">
  37 <!ENTITY CONSOLE               SYSTEM "login.defs.d/CONSOLE.xml">
  38 <!ENTITY CONSOLE_GROUPS        SYSTEM "login.defs.d/CONSOLE_GROUPS.xml">
  39 <!ENTITY CREATE_HOME           SYSTEM "login.defs.d/CREATE_HOME.xml">
  40 <!ENTITY DEFAULT_HOME          SYSTEM "login.defs.d/DEFAULT_HOME.xml">
  41 <!ENTITY ENCRYPT_METHOD        SYSTEM "login.defs.d/ENCRYPT_METHOD.xml">
  42 <!ENTITY ENV_HZ                SYSTEM "login.defs.d/ENV_HZ.xml">
  43 <!ENTITY ENV_PATH              SYSTEM "login.defs.d/ENV_PATH.xml">
  44 <!ENTITY ENV_SUPATH            SYSTEM "login.defs.d/ENV_SUPATH.xml">
  45 <!ENTITY ENV_TZ                SYSTEM "login.defs.d/ENV_TZ.xml">
  46 <!ENTITY ENVIRON_FILE          SYSTEM "login.defs.d/ENVIRON_FILE.xml">
  47 <!ENTITY ERASECHAR             SYSTEM "login.defs.d/ERASECHAR.xml">
  48 <!ENTITY FAIL_DELAY            SYSTEM "login.defs.d/FAIL_DELAY.xml">
  49 <!ENTITY FAILLOG_ENAB          SYSTEM "login.defs.d/FAILLOG_ENAB.xml">
  50 <!ENTITY FAKE_SHELL            SYSTEM "login.defs.d/FAKE_SHELL.xml">
  51 <!ENTITY FTMP_FILE             SYSTEM "login.defs.d/FTMP_FILE.xml">
  52 <!ENTITY GID_MAX               SYSTEM "login.defs.d/GID_MAX.xml">
  53 <!ENTITY HUSHLOGIN_FILE        SYSTEM "login.defs.d/HUSHLOGIN_FILE.xml">
  54 <!ENTITY ISSUE_FILE            SYSTEM "login.defs.d/ISSUE_FILE.xml">
  55 <!ENTITY KILLCHAR              SYSTEM "login.defs.d/KILLCHAR.xml">
  56 <!ENTITY LASTLOG_ENAB          SYSTEM "login.defs.d/LASTLOG_ENAB.xml">
  57 <!ENTITY LOG_OK_LOGINS         SYSTEM "login.defs.d/LOG_OK_LOGINS.xml">
  58 <!ENTITY LOG_UNKFAIL_ENAB      SYSTEM "login.defs.d/LOG_UNKFAIL_ENAB.xml">
  59 <!ENTITY LOGIN_RETRIES         SYSTEM "login.defs.d/LOGIN_RETRIES.xml">
  60 <!ENTITY LOGIN_STRING          SYSTEM "login.defs.d/LOGIN_STRING.xml">
  61 <!ENTITY LOGIN_TIMEOUT         SYSTEM "login.defs.d/LOGIN_TIMEOUT.xml">
  62 <!ENTITY MAIL_CHECK_ENAB       SYSTEM "login.defs.d/MAIL_CHECK_ENAB.xml">
  63 <!ENTITY MAIL_DIR              SYSTEM "login.defs.d/MAIL_DIR.xml">
  64 <!ENTITY MAX_MEMBERS_PER_GROUP SYSTEM "login.defs.d/MAX_MEMBERS_PER_GROUP.xml">
  65 <!ENTITY MD5_CRYPT_ENAB        SYSTEM "login.defs.d/MD5_CRYPT_ENAB.xml">
  66 <!ENTITY MOTD_FILE             SYSTEM "login.defs.d/MOTD_FILE.xml">
  67 <!ENTITY NOLOGINS_FILE         SYSTEM "login.defs.d/NOLOGINS_FILE.xml">
  68 <!ENTITY OBSCURE_CHECKS_ENAB   SYSTEM "login.defs.d/OBSCURE_CHECKS_ENAB.xml">
  69 <!ENTITY PASS_ALWAYS_WARN      SYSTEM "login.defs.d/PASS_ALWAYS_WARN.xml">
  70 <!ENTITY PASS_CHANGE_TRIES     SYSTEM "login.defs.d/PASS_CHANGE_TRIES.xml">
  71 <!ENTITY PASS_MAX_LEN          SYSTEM "login.defs.d/PASS_MAX_LEN.xml">
  72 <!ENTITY PASS_MAX_DAYS         SYSTEM "login.defs.d/PASS_MAX_DAYS.xml">
  73 <!ENTITY PASS_MIN_DAYS         SYSTEM "login.defs.d/PASS_MIN_DAYS.xml">
  74 <!ENTITY PASS_WARN_AGE         SYSTEM "login.defs.d/PASS_WARN_AGE.xml">
  75 <!ENTITY PORTTIME_CHECKS_ENAB  SYSTEM "login.defs.d/PORTTIME_CHECKS_ENAB.xml">
  76 <!ENTITY QUOTAS_ENAB           SYSTEM "login.defs.d/QUOTAS_ENAB.xml">
  77 <!ENTITY SHA_CRYPT_MIN_ROUNDS  SYSTEM "login.defs.d/SHA_CRYPT_MIN_ROUNDS.xml">
  78 <!ENTITY SULOG_FILE            SYSTEM "login.defs.d/SULOG_FILE.xml">
  79 <!ENTITY SU_NAME               SYSTEM "login.defs.d/SU_NAME.xml">
  80 <!ENTITY SU_WHEEL_ONLY         SYSTEM "login.defs.d/SU_WHEEL_ONLY.xml">
  81 <!ENTITY SYS_GID_MAX           SYSTEM "login.defs.d/SYS_GID_MAX.xml">
  82 <!ENTITY SYSLOG_SG_ENAB        SYSTEM "login.defs.d/SYSLOG_SG_ENAB.xml">
  83 <!ENTITY SYSLOG_SU_ENAB        SYSTEM "login.defs.d/SYSLOG_SU_ENAB.xml">
  84 <!ENTITY SYS_UID_MAX           SYSTEM "login.defs.d/SYS_UID_MAX.xml">
  85 <!ENTITY TCB_AUTH_GROUP        SYSTEM "login.defs.d/TCB_AUTH_GROUP.xml">
  86 <!ENTITY TCB_SYMLINKS          SYSTEM "login.defs.d/TCB_SYMLINKS.xml">
  87 <!ENTITY TTYGROUP              SYSTEM "login.defs.d/TTYGROUP.xml">
  88 <!ENTITY TTYTYPE_FILE          SYSTEM "login.defs.d/TTYTYPE_FILE.xml">
  89 <!ENTITY UID_MAX               SYSTEM "login.defs.d/UID_MAX.xml">
  90 <!ENTITY ULIMIT                SYSTEM "login.defs.d/ULIMIT.xml">
  91 <!ENTITY UMASK                 SYSTEM "login.defs.d/UMASK.xml">
  92 <!ENTITY USERDEL_CMD           SYSTEM "login.defs.d/USERDEL_CMD.xml">
  93 <!ENTITY USERGROUPS_ENAB       SYSTEM "login.defs.d/USERGROUPS_ENAB.xml">
  94 <!ENTITY USE_TCB               SYSTEM "login.defs.d/USE_TCB.xml">
  95 <!-- SHADOW-CONFIG-HERE -->
  96 ]>
  97
  98 <refentry id='login.defs.5'>
  99   <!--  $Id$ -->
 100   <refmeta>
 101     <refentrytitle>login.defs</refentrytitle>
 102     <manvolnum>5</manvolnum>
 103     <refmiscinfo class="sectdesc">File Formats and Conversions</refmiscinfo>
 104     <refmiscinfo class="source">shadow-utils</refmiscinfo>
 105     <refmiscinfo class="version">&SHADOW_UTILS_VERSION;</refmiscinfo>
 106   </refmeta>
 107   <refnamediv id='name'>
 108     <refname>login.defs</refname>
 109     <refpurpose>shadow password suite configuration</refpurpose>
 110   </refnamediv>
 111
 112   <refsect1 id='description'>
 113     <title>DESCRIPTION</title>
 114     <para>
 115       The <filename>/etc/login.defs</filename> file defines the
 116       site-specific configuration for the shadow password suite. This file
 117       is required. Absence of this file will not prevent system operation,
 118       but will probably result in undesirable operation.
 119     </para>
 120
 121     <para>
 122       This file is a readable text file, each line of the file describing
 123       one configuration parameter. The lines consist of a configuration name
 124       and value, separated by whitespace. Blank lines and comment lines are
 125       ignored. Comments are introduced with a "#" pound sign and the pound
 126       sign must be the first non-white character of the line.
 127     </para>
 128
 129     <para>
 130       Parameter values may be of four types: strings, booleans, numbers, and
 131       long numbers. A string is comprised of any printable characters. A
 132       boolean should be either the value <replaceable>yes</replaceable> or
 133       <replaceable>no</replaceable>. An undefined boolean
 134       parameter or one with a value other than these will be given a
 135       <replaceable>no</replaceable>
 136       value. Numbers (both regular and long) may be either decimal values,
 137       octal values (precede the value with <replaceable>0</replaceable>) or
 138       hexadecimal values
 139       (precede the value with <replaceable>0x</replaceable>).
 140       The maximum value of the regular and
 141       long numeric parameters is machine-dependent.
 142     </para>
 143
 144     <para>The following configuration items are provided:</para>
 145
 146     <variablelist remap='IP'>
 147       &CHFN_AUTH;
 148       &CHFN_RESTRICT;
 149       &CHSH_AUTH;
 150       &CONSOLE;
 151       &CONSOLE_GROUPS;
 152       &CREATE_HOME;
 153       &DEFAULT_HOME;
 154       &ENCRYPT_METHOD;
 155       &ENV_HZ;
 156       &ENV_PATH;
 157       &ENV_SUPATH;
 158       &ENV_TZ;
 159       &ENVIRON_FILE;
 160       &ERASECHAR;
 161       &FAIL_DELAY;
 162       &FAILLOG_ENAB;
 163       &FAKE_SHELL;
 164       &FTMP_FILE;
 165       &GID_MAX; <!-- documents also GID_MIN -->
 166       &HUSHLOGIN_FILE;
 167       &ISSUE_FILE;
 168       &KILLCHAR;
 169       &LASTLOG_ENAB;
 170       &LOG_OK_LOGINS;
 171       &LOG_UNKFAIL_ENAB;
 172       &LOGIN_RETRIES;
 173       &LOGIN_STRING;
 174       &LOGIN_TIMEOUT;
 175       &MAIL_CHECK_ENAB;
 176       &MAIL_DIR;
 177       &MAX_MEMBERS_PER_GROUP;
 178       &MD5_CRYPT_ENAB;
 179       &MOTD_FILE;
 180       &NOLOGINS_FILE;
 181       &OBSCURE_CHECKS_ENAB;
 182       &PASS_ALWAYS_WARN;
 183       &PASS_CHANGE_TRIES;
 184       &PASS_MAX_DAYS;
 185       &PASS_MIN_DAYS;
 186       &PASS_WARN_AGE;
 187       <para>
 188         <option>PASS_MAX_DAYS</option>, <option>PASS_MIN_DAYS</option> and
 189         <option>PASS_WARN_AGE</option> are only used at the
 190         time of account creation. Any changes to these settings won't affect
 191         existing accounts.
 192       </para>
 193       &PASS_MAX_LEN; <!-- documents also PASS_MIN_LEN -->
 194       &PORTTIME_CHECKS_ENAB;
 195       &QUOTAS_ENAB;
 196       &SHA_CRYPT_MIN_ROUNDS; <!-- documents also SHA_CRYPT_MAX_ROUNDS -->
 197       &SULOG_FILE;
 198       &SU_NAME;
 199       &SU_WHEEL_ONLY;
 200       &SYS_GID_MAX; <!-- documents also SYS_GID_MIN -->
 201       &SYS_UID_MAX; <!-- documents also SYS_UID_MIN -->
 202       &SYSLOG_SG_ENAB;
 203       &SYSLOG_SU_ENAB;
 204       &TCB_AUTH_GROUP;
 205       &TCB_SYMLINKS;
 206       &TTYGROUP;
 207       &TTYTYPE_FILE;
 208       &UID_MAX; <!-- documents also UID_MIN -->
 209       &ULIMIT;
 210       &UMASK;
 211       &USERDEL_CMD;
 212       &USERGROUPS_ENAB;
 213       &USE_TCB;
 214     </variablelist>
 215   </refsect1>
 216
 217   <refsect1 id='cross_references'>
 218     <title>CROSS REFERENCES</title>
 219     <para>
 220       The following cross references show which programs in the shadow
 221       password suite use which parameters.
 222     </para>
 223     <!-- .na -->
 224     <variablelist remap='IP'>
 225       <varlistentry condition="tcb">
 226         <term>chage</term>
 227         <listitem>
 228           <para>USE_TCB</para>
 229         </listitem>
 230       </varlistentry>
 231       <varlistentry>
 232         <term>chfn</term>
 233         <listitem>
 234           <para>
 235             <phrase condition="no_pam">CHFN_AUTH</phrase>
 236             CHFN_RESTRICT
 237             <phrase condition="no_pam">LOGIN_STRING</phrase>
 238           </para>
 239         </listitem>
 240       </varlistentry>
 241       <varlistentry>
 242         <term>chgpasswd</term>
 243         <listitem>
 244           <para>
 245             ENCRYPT_METHOD MAX_MEMBERS_PER_GROUP MD5_CRYPT_ENAB
 246             <phrase condition="sha_crypt">SHA_CRYPT_MAX_ROUNDS
 247             SHA_CRYPT_MIN_ROUNDS</phrase>
 248           </para>
 249         </listitem>
 250       </varlistentry>
 251       <varlistentry>
 252         <term>chpasswd</term>
 253         <listitem>
 254           <para>
 255             <phrase condition="no_pam">ENCRYPT_METHOD
 256             MD5_CRYPT_ENAB </phrase>
 257             <phrase condition="sha_crypt">SHA_CRYPT_MAX_ROUNDS
 258             SHA_CRYPT_MIN_ROUNDS</phrase>
 259           </para>
 260         </listitem>
 261       </varlistentry>
 262       <varlistentry condition="no_pam">
 263         <term>chsh</term>
 264         <listitem>
 265           <para>
 266             CHSH_AUTH LOGIN_STRING
 267           </para>
 268         </listitem>
 269       </varlistentry>
 270       <!-- expiry: no variables (CONSOLE_GROUPS linked, but not used) -->
 271       <!-- faillog: no variables -->
 272       <varlistentry>
 273         <term>gpasswd</term>
 274         <listitem>
 275           <para>
 276             ENCRYPT_METHOD MAX_MEMBERS_PER_GROUP MD5_CRYPT_ENAB
 277             <phrase condition="sha_crypt">SHA_CRYPT_MAX_ROUNDS
 278             SHA_CRYPT_MIN_ROUNDS</phrase>
 279           </para>
 280         </listitem>
 281       </varlistentry>
 282       <varlistentry>
 283         <term>groupadd</term>
 284         <listitem>
 285           <para>
 286             GID_MAX GID_MIN MAX_MEMBERS_PER_GROUP
 287             SYS_GID_MAX SYS_GID_MIN
 288           </para>
 289         </listitem>
 290       </varlistentry>
 291       <varlistentry>
 292         <term>groupdel</term>
 293         <listitem>
 294           <para>MAX_MEMBERS_PER_GROUP</para>
 295         </listitem>
 296       </varlistentry>
 297       <varlistentry>
 298         <term>groupmems</term>
 299         <listitem>
 300           <para>MAX_MEMBERS_PER_GROUP</para>
 301         </listitem>
 302       </varlistentry>
 303       <varlistentry>
 304         <term>groupmod</term>
 305         <listitem>
 306           <para>MAX_MEMBERS_PER_GROUP</para>
 307         </listitem>
 308       </varlistentry>
 309       <!-- groups: no variables -->
 310       <varlistentry>
 311         <term>grpck</term>
 312         <listitem>
 313           <para>MAX_MEMBERS_PER_GROUP</para>
 314         </listitem>
 315       </varlistentry>
 316       <varlistentry>
 317         <term>grpconv</term>
 318         <listitem>
 319           <para>MAX_MEMBERS_PER_GROUP</para>
 320         </listitem>
 321       </varlistentry>
 322       <varlistentry>
 323         <term>grpunconv</term>
 324         <listitem>
 325           <para>MAX_MEMBERS_PER_GROUP</para>
 326         </listitem>
 327       </varlistentry>
 328       <!-- id: no variables -->
 329       <!-- lastlog: no variables -->
 330       <varlistentry>
 331         <term>login</term>
 332         <listitem>
 333           <para>
 334             <phrase condition="no_pam">CONSOLE</phrase>
 335             CONSOLE_GROUPS DEFAULT_HOME
 336             <phrase condition="no_pam">ENV_HZ ENV_PATH ENV_SUPATH
 337             ENV_TZ ENVIRON_FILE</phrase>
 338             ERASECHAR FAIL_DELAY
 339             <phrase condition="no_pam">FAILLOG_ENAB</phrase>
 340             FAKE_SHELL
 341             <phrase condition="no_pam">FTMP_FILE</phrase>
 342             HUSHLOGIN_FILE
 343             <phrase condition="no_pam">ISSUE_FILE</phrase>
 344             KILLCHAR
 345             <phrase condition="no_pam">LASTLOG_ENAB</phrase>
 346             LOGIN_RETRIES
 347             <phrase condition="no_pam">LOGIN_STRING</phrase>
 348             LOGIN_TIMEOUT LOG_OK_LOGINS LOG_UNKFAIL_ENAB
 349             <phrase condition="no_pam">MAIL_CHECK_ENAB MAIL_DIR MAIL_FILE
 350             MOTD_FILE NOLOGINS_FILE PORTTIME_CHECKS_ENAB
 351             QUOTAS_ENAB</phrase>
 352             TTYGROUP TTYPERM TTYTYPE_FILE
 353             <phrase condition="no_pam">ULIMIT UMASK</phrase>
 354             USERGROUPS_ENAB
 355           </para>
 356         </listitem>
 357       </varlistentry>
 358       <!-- logoutd: no variables -->
 359       <varlistentry>
 360         <term>newgrp / sg</term>
 361         <listitem>
 362           <para>
 363             SYSLOG_SG_ENAB
 364           </para>
 365         </listitem>
 366       </varlistentry>
 367       <varlistentry>
 368         <term>newusers</term>
 369         <listitem>
 370           <para>
 371             ENCRYPT_METHOD
 372             GID_MAX GID_MIN
 373             MAX_MEMBERS_PER_GROUP MD5_CRYPT_ENAB
 374             PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE
 375             <phrase condition="sha_crypt">SHA_CRYPT_MAX_ROUNDS
 376             SHA_CRYPT_MIN_ROUNDS</phrase>
 377             SYS_GID_MAX SYS_GID_MIN SYS_UID_MAX SYS_UID_MIN UID_MAX UID_MIN
 378             UMASK
 379           </para>
 380         </listitem>
 381       </varlistentry>
 382       <!-- nologin: no variables -->
 383       <varlistentry condition="no_pam">
 384         <term>passwd</term>
 385         <listitem>
 386           <para>
 387             ENCRYPT_METHOD MD5_CRYPT_ENAB OBSCURE_CHECKS_ENAB
 388             PASS_ALWAYS_WARN PASS_CHANGE_TRIES PASS_MAX_LEN PASS_MIN_LEN
 389             <phrase condition="sha_crypt">SHA_CRYPT_MAX_ROUNDS
 390             SHA_CRYPT_MIN_ROUNDS</phrase>
 391           </para>
 392         </listitem>
 393       </varlistentry>
 394       <varlistentry>
 395         <term>pwck</term>
 396         <listitem>
 397           <para>
 398             PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE
 399             <phrase condition="tcb">TCB_AUTH_GROUP TCB_SYMLINKS USE_TCB</phrase>
 400           </para>
 401         </listitem>
 402       </varlistentry>
 403       <varlistentry>
 404         <term>pwconv</term>
 405         <listitem>
 406           <para>
 407             PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE
 408             <phrase condition="tcb">USE_TCB</phrase>
 409           </para>
 410         </listitem>
 411       </varlistentry>
 412       <varlistentry condition="tcb">
 413         <term>pwunconv</term>
 414         <listitem>
 415           <para>
 416             <phrase condition="tcb">USE_TCB</phrase>
 417           </para>
 418         </listitem>
 419       </varlistentry>
 420       <varlistentry>
 421         <term>su</term>
 422         <listitem>
 423           <para>
 424             <phrase condition="no_pam">CONSOLE</phrase>
 425             CONSOLE_GROUPS DEFAULT_HOME
 426             <phrase condition="no_pam">ENV_HZ ENVIRON_FILE</phrase>
 427             ENV_PATH ENV_SUPATH
 428             <phrase condition="no_pam">ENV_TZ LOGIN_STRING MAIL_CHECK_ENAB
 429             MAIL_DIR MAIL_FILE QUOTAS_ENAB</phrase>
 430             SULOG_FILE SU_NAME
 431             <phrase condition="no_pam">SU_WHEEL_ONLY</phrase>
 432             SYSLOG_SU_ENAB
 433             <phrase condition="no_pam">USERGROUPS_ENAB</phrase>
 434           </para>
 435         </listitem>
 436       </varlistentry>
 437       <varlistentry>
 438         <term>sulogin</term>
 439         <listitem>
 440           <para>
 441             ENV_HZ
 442             <phrase condition="no_pam">ENV_TZ</phrase>
 443           </para>
 444         </listitem>
 445       </varlistentry>
 446       <varlistentry>
 447         <term>useradd</term>
 448         <listitem>
 449           <para>
 450             CREATE_HOME
 451             GID_MAX GID_MIN
 452             MAIL_DIR MAX_MEMBERS_PER_GROUP
 453             PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE
 454             SYS_GID_MAX SYS_GID_MIN SYS_UID_MAX SYS_UID_MIN UID_MAX UID_MIN
 455             UMASK
 456             <phrase condition="tcb">TCB_AUTH_GROUP TCB_SYMLINK USE_TCB</phrase>
 457           </para>
 458         </listitem>
 459       </varlistentry>
 460       <varlistentry>
 461         <term>userdel</term>
 462         <listitem>
 463           <para>
 464             MAIL_DIR MAIL_FILE MAX_MEMBERS_PER_GROUP USERDEL_CMD
 465             USERGROUPS_ENAB
 466             <phrase condition="tcb">TCB_SYMLINKS USE_TCB</phrase>
 467           </para>
 468         </listitem>
 469       </varlistentry>
 470       <varlistentry>
 471         <term>usermod</term>
 472         <listitem>
 473           <para>
 474             MAIL_DIR MAIL_FILE MAX_MEMBERS_PER_GROUP
 475             <phrase condition="tcb">TCB_SYMLINKS USE_TCB</phrase>
 476           </para>
 477         </listitem>
 478       </varlistentry>
 479       <varlistentry condition="tcb">
 480         <term>vipw</term>
 481         <listitem>
 482           <para>
 483             <phrase condition="tcb">USE_TCB</phrase>
 484           </para>
 485         </listitem>
 486       </varlistentry>
 487     </variablelist>
 488   </refsect1>
 489
 490   <refsect1 id='bugs' condition="pam">
 491     <title>BUGS</title>
 492     <para>
 493       Much of the functionality that used to be provided by the shadow
 494       password suite is now handled by PAM. Thus,
 495       <filename>/etc/login.defs</filename> is no longer used by <citerefentry>
 496       <refentrytitle>passwd</refentrytitle><manvolnum>1</manvolnum>
 497       </citerefentry>, or less used by <citerefentry>
 498       <refentrytitle>login</refentrytitle><manvolnum>1</manvolnum>
 499       </citerefentry>, and <citerefentry>
 500       <refentrytitle>su</refentrytitle><manvolnum>1</manvolnum>
 501       </citerefentry>. Please refer to the corresponding PAM configuration
 502       files instead.
 503     </para>
 504   </refsect1>
 505
 506   <refsect1 id='see_also'>
 507     <title>SEE ALSO</title>
 508     <para>
 509       <citerefentry>
 510         <refentrytitle>login</refentrytitle><manvolnum>1</manvolnum>
 511       </citerefentry>,
 512       <citerefentry>
 513         <refentrytitle>passwd</refentrytitle><manvolnum>1</manvolnum>
 514       </citerefentry>,
 515       <citerefentry>
 516         <refentrytitle>su</refentrytitle><manvolnum>1</manvolnum>
 517       </citerefentry>,
 518       <citerefentry>
 519         <refentrytitle>passwd</refentrytitle><manvolnum>5</manvolnum>
 520       </citerefentry>,
 521       <citerefentry>
 522         <refentrytitle>shadow</refentrytitle><manvolnum>5</manvolnum>
 523       </citerefentry>,
 524       <citerefentry>
 525         <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum>
 526       </citerefentry>.
 527     </para>
 528   </refsect1>
 529 </refentry>