/etc/login.defs
/etc/login.defs - Konfiguriert die Shadow-Hilfsprogramme
#
# /etc/login.defs - Configuration control definitions for the shadow package.
#
# REQUIRED for useradd/userdel/usermod
# Directory where mailboxes reside, _or_ name of file, relative to the
# home directory. If you _do_ define MAIL_DIR and MAIL_FILE,
# MAIL_DIR takes precedence.
#
# Essentially:
# - MAIL_DIR defines the location of users mail spool files
# (for mbox use) by appending the username to MAIL_DIR as defined
# below.
# - MAIL_FILE defines the location of the users mail spool files as the
# fully-qualified filename obtained by prepending the user home
# directory before $MAIL_FILE
#
# NOTE: This is no more used for setting up users MAIL environment variable
# which is, starting from shadow 4.0.12-1 in Debian, entirely the
# job of the pam_mail PAM modules
# See default PAM configuration files provided for
# login, su, etc.
#
# This is a temporary situation: setting these variables will soon
# move to /etc/default/useradd and the variables will then be
# no more supported
MAIL_DIR /var/mail
#MAIL_FILE .mail
#
# Enable display of unknown usernames when login(1) failures are recorded.
#
# WARNING: Unknown usernames may become world readable.
# See #290803 and #298773 for details about how this could become a security
# concern
LOG_UNKFAIL_ENAB no
#
# Enable logging of successful logins
#
LOG_OK_LOGINS no
#
# If defined, file which maps tty line to TERM environment parameter.
# Each line of the file is in a format similar to "vt100 tty01".
#
#TTYTYPE_FILE /etc/ttytype
#
# If defined, file which inhibits all the usual chatter during the login
# sequence. If a full pathname, then hushed mode will be enabled if the
# user's name or shell are found in the file. If not a full pathname, then
# hushed mode will be enabled if the file exists in the user's home directory.
#
HUSHLOGIN_FILE .hushlogin
#HUSHLOGIN_FILE /etc/hushlogins
#
# *REQUIRED* The default PATH settings, for superuser and normal users.
#
# (they are minimal, add the rest in the shell startup files)
ENV_SUPATH PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
ENV_PATH PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
#
# Terminal permissions for terminals after login(1).
# These settings are ignored for remote and other logins.
#
# TTYGROUP Login tty will be assigned this group ownership.
# TTYPERM Login tty will be set to this permission.
#
#TTYGROUP tty
TTYPERM 0600
#
# Login configuration initializations:
#
# ERASECHAR Terminal ERASE character ('\010' = backspace).
# KILLCHAR Terminal KILL character ('\025' = CTRL/U).
#
# The ERASECHAR and KILLCHAR are used only on System V machines.
#
ERASECHAR 0177
KILLCHAR 025
# HOME_MODE is used by useradd(8) and newusers(8) to set the mode for new
# home directories.
HOME_MODE 0700
#
# Password aging controls:
#
# PASS_MAX_DAYS Maximum number of days a password may be used.
# PASS_MIN_DAYS Minimum number of days allowed between password changes.
# PASS_WARN_AGE Number of days warning given before a password expires.
#
PASS_MAX_DAYS 99999
PASS_MIN_DAYS 0
PASS_WARN_AGE 7
#
# Min/max values for automatic uid selection in useradd(8)
#
UID_MIN 1000
UID_MAX 60000
# System accounts
#SYS_UID_MIN 101
#SYS_UID_MAX 999
# Extra per user uids
SUB_UID_MIN 100000
SUB_UID_MAX 600100000
SUB_UID_COUNT 65536
#
# Min/max values for automatic gid selection in groupadd(8)
#
GID_MIN 1000
GID_MAX 60000
# System accounts
#SYS_GID_MIN 101
#SYS_GID_MAX 999
# Extra per user group ids
SUB_GID_MIN 100000
SUB_GID_MAX 600100000
SUB_GID_COUNT 65536
#
# Max number of login(1) retries if password is bad
# This will most likely be overriden by PAM, since the default pam_unix module
# has it's own built in of 3 retries. However, this is a safe fallback in case
# you are using an authentication module that does not enforce PAM_MAXTRIES.
#
LOGIN_RETRIES 5
#
# Max time in seconds for login(1)
#
LOGIN_TIMEOUT 60
#
# Which fields may be changed by regular users using chfn(1) - use
# any combination of letters "frwh" (full name, room number, work
# phone, home phone). If not defined, no changes are allowed.
# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
#
CHFN_RESTRICT rwh
#
# If set to MD5, MD5-based algorithm will be used for encrypting password
# If set to SHA256, SHA256-based algorithm will be used for encrypting password
# If set to SHA512, SHA512-based algorithm will be used for encrypting password
# If set to BCRYPT, BCRYPT-based algorithm will be used for encrypting password
# If set to YESCRYPT, YESCRYPT-based algorithm will be used for encrypting password
# If set to DES, DES-based algorithm will be used for encrypting password (default)
# MD5 and DES should not be used for new hashes, see crypt(5) for recommendations.
# Overrides the MD5_CRYPT_ENAB option
#
# Note: It is recommended to use a value consistent with
# the PAM modules configuration.
#
ENCRYPT_METHOD YESCRYPT
#
# Should login be allowed if we can't cd to the home directory?
# Default is no.
#
DEFAULT_HOME yes
#
# The pwck(8) utility emits a warning for any system account with a home
# directory that does not exist. Some system accounts intentionally do
# not have a home directory. Such accounts may have this string as
# their home directory in /etc/passwd to avoid a spurious warning.
#
NONEXISTENT /nonexistent
#
# If defined, this command is run when removing a user.
# It should remove any at/cron/print jobs etc. owned by
# the user to be removed (passed as the first argument).
#
#USERDEL_CMD /usr/sbin/userdel_local
#
# If set to yes, userdel(8) will remove the user's group if it contains no more
# members, and useradd(8) will create by default a group with the name of the
# user.
#
# Other former uses of this variable are not used in PAM environments, such as
# Debian.
#
USERGROUPS_ENAB yes