LOGIN.DEFS(5)           File Formats and Configuration           LOGIN.DEFS(5)

NAME
       login.defs - Konfiguration der Shadow-Passwort-Programmsammlung

BESCHREIBUNG
       The /etc/login.defs file defines the site-specific configuration for
       the shadow password suite. This file is required. Absence of this file
       will not prevent system operation, but will probably result in
       undesirable operation.

       Diese Datei ist eine lesbare Textdatei. Jede Zeile der Datei beschreibt
       einen Konfigurationsparameter und besteht aus dessen Namen und einem
       Wert; beides durch Leerraumzeichen voneinander getrennt. Leer- und
       Kommentarzeilen werden nicht beachtet. Kommentare werden mit dem
       Rautezeichen >>#<< eingeleitet, wobei es das erste nicht leere Zeichen
       der Zeile sein muss.

       Parameter values may be of four types: strings, booleans, numbers, and
       long numbers. A string is comprised of any printable characters. A
       boolean should be either the value yes or no. An undefined boolean
       parameter or one with a value other than these will be given a no
       value. Numbers (both regular and long) may be either decimal values,
       octal values (precede the value with 0) or hexadecimal values (precede
       the value with 0x). The maximum value of the regular and long numeric
       parameters is machine-dependent.

       Folgende Merkmale konnen konfiguriert werden:

       PASS_MAX_DAYS, PASS_MIN_DAYS and PASS_WARN_AGE are only used at the
       time of account creation. Any changes to these settings won't affect
       existing accounts.

QUERVERWEISE
       Die folgenden Querverweise zeigen, welche Programme aus der
       Shadow-Passwort-Sammlung welche Parameter verwenden.

       chfn
           CHFN_RESTRICT

       chgpasswd
           ENCRYPT_METHOD MAX_MEMBERS_PER_GROUP SHA_CRYPT_MAX_ROUNDS
           SHA_CRYPT_MIN_ROUNDS YESCRYPT_COST_FACTOR

       chpasswd
           SHA_CRYPT_MAX_ROUNDS SHA_CRYPT_MIN_ROUNDS YESCRYPT_COST_FACTOR

       gpasswd
           ENCRYPT_METHOD MAX_MEMBERS_PER_GROUP SHA_CRYPT_MAX_ROUNDS
           SHA_CRYPT_MIN_ROUNDS YESCRYPT_COST_FACTOR

       groupadd
           GID_MAX GID_MIN MAX_MEMBERS_PER_GROUP SYS_GID_MAX SYS_GID_MIN

       groupdel
           MAX_MEMBERS_PER_GROUP

       groupmems
           MAX_MEMBERS_PER_GROUP

       groupmod
           MAX_MEMBERS_PER_GROUP

       grpck
           MAX_MEMBERS_PER_GROUP

       grpconv
           MAX_MEMBERS_PER_GROUP

       grpunconv
           MAX_MEMBERS_PER_GROUP

       lastlog
           LASTLOG_UID_MAX

       newgrp / sg
           SYSLOG_SG_ENAB

       newusers
           ENCRYPT_METHOD GID_MAX GID_MIN MAX_MEMBERS_PER_GROUP HOME_MODE
           PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE SHA_CRYPT_MAX_ROUNDS
           SHA_CRYPT_MIN_ROUNDS SUB_GID_COUNT SUB_GID_MAX SUB_GID_MIN
           SUB_UID_COUNT SUB_UID_MAX SUB_UID_MIN SYS_GID_MAX SYS_GID_MIN
           SYS_UID_MAX SYS_UID_MIN UID_MAX UID_MIN UMASK YESCRYPT_COST_FACTOR

       pwck
           PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE

       pwconv
           PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE

       useradd
           CREATE_HOME GID_MAX GID_MIN HOME_MODE LASTLOG_UID_MAX MAIL_DIR
           MAX_MEMBERS_PER_GROUP PASS_MAX_DAYS PASS_MIN_DAYS PASS_WARN_AGE
           SUB_GID_COUNT SUB_GID_MAX SUB_GID_MIN SUB_UID_COUNT SUB_UID_MAX
           SUB_UID_MIN SYS_GID_MAX SYS_GID_MIN SYS_UID_MAX SYS_UID_MIN UID_MAX
           UID_MIN UMASK

       userdel
           MAIL_DIR MAIL_FILE MAX_MEMBERS_PER_GROUP USERDEL_CMD
           USERGROUPS_ENAB

FEHLER
       Much of the functionality that used to be provided by the shadow
       password suite is now handled by PAM. Thus, /etc/login.defs is no
       longer used by passwd(1), or less used by login(1), and su(1). Please
       refer to the corresponding PAM configuration files instead.

SIEHE AUCH
       login(1), passwd(1), su(1), passwd(5), shadow(5), pam(8).

shadow-utils 4.15.1               01.04.2024                     LOGIN.DEFS(5)