5 kx #
5 kx # /etc/login.defs - Configuration control definitions for the shadow package.
5 kx #
5 kx # $Id: login.defs 3038 2009-07-23 20:41:35Z nekral-guest $
5 kx #
5 kx
5 kx #
5 kx # Delay in seconds before being allowed another attempt after a login failure
5 kx #
5 kx FAIL_DELAY 3
5 kx
5 kx #
5 kx # Enable display of unknown usernames when login failures are recorded.
5 kx #
5 kx LOG_UNKFAIL_ENAB no
5 kx
5 kx #
5 kx # Enable logging of successful logins
5 kx #
5 kx LOG_OK_LOGINS no
5 kx
5 kx #
5 kx # Enable "syslog" logging of su activity - in addition to sulog file logging.
5 kx # SYSLOG_SG_ENAB does the same for newgrp and sg.
5 kx #
5 kx SYSLOG_SU_ENAB yes
5 kx SYSLOG_SG_ENAB yes
5 kx
5 kx #
5 kx # If defined, either full pathname of a file containing device names or
5 kx # a ":" delimited list of device names. Root logins will be allowed only
5 kx # upon these devices.
5 kx #
5 kx CONSOLE /etc/securetty
5 kx #CONSOLE console:tty01:tty02:tty03:tty04
5 kx
5 kx #
5 kx # If defined, all su activity is logged to this file.
5 kx #
5 kx #SULOG_FILE /var/log/sulog
5 kx
5 kx #
5 kx # If defined, file which maps tty line to TERM environment parameter.
5 kx # Each line of the file is in a format something like "vt100 tty01".
5 kx #
5 kx #TTYTYPE_FILE /etc/ttytype
5 kx
5 kx #
5 kx # If defined, the command name to display when running "su -". For
5 kx # example, if this is defined as "su" then a "ps" will display the
5 kx # command is "-su". If not defined, then "ps" would display the
5 kx # name of the shell actually being run, e.g. something like "-sh".
5 kx #
5 kx SU_NAME su
5 kx
5 kx #
5 kx # *REQUIRED*
5 kx # Directory where mailboxes reside, _or_ name of file, relative to the
5 kx # home directory. If you _do_ define both, MAIL_DIR takes precedence.
5 kx #
5 kx MAIL_DIR /var/spool/mail
5 kx #MAIL_FILE .mail
5 kx
5 kx #
5 kx # If defined, file which inhibits all the usual chatter during the login
5 kx # sequence. If a full pathname, then hushed mode will be enabled if the
5 kx # user's name or shell are found in the file. If not a full pathname, then
5 kx # hushed mode will be enabled if the file exists in the user's home directory.
5 kx #
5 kx HUSHLOGIN_FILE .hushlogin
5 kx #HUSHLOGIN_FILE /etc/hushlogins
5 kx
5 kx #
5 kx # *REQUIRED* The default PATH settings, for superuser and normal users.
5 kx #
5 kx # (they are minimal, add the rest in the shell startup files)
5 kx ENV_SUPATH PATH=/usr/local/sbin:/usr/local/bin:/sbin:/usr/sbin:/bin:/usr/bin
5 kx ENV_PATH PATH=/usr/local/bin:/bin:/usr/bin
5 kx
5 kx #
5 kx # Terminal permissions
5 kx #
5 kx # TTYGROUP Login tty will be assigned this group ownership.
5 kx # TTYPERM Login tty will be set to this permission.
5 kx #
5 kx # If you have a "write" program which is "setgid" to a special group
5 kx # which owns the terminals, define TTYGROUP to the group number and
5 kx # TTYPERM to 0620. Otherwise leave TTYGROUP commented out and assign
5 kx # TTYPERM to either 622 or 600.
5 kx #
5 kx TTYGROUP tty
5 kx TTYPERM 0620
5 kx
5 kx #
5 kx # Login configuration initializations:
5 kx #
5 kx # ERASECHAR Terminal ERASE character ('\010' = backspace).
5 kx # KILLCHAR Terminal KILL character ('\025' = CTRL/U).
5 kx #
5 kx # The ERASECHAR and KILLCHAR are used only on System V machines.
5 kx # (now it works with setrlimit too; ulimit is in 512-byte units)
5 kx #
5 kx # Prefix these values with "0" to get octal, "0x" to get hexadecimal.
5 kx #
5 kx ERASECHAR 0177
5 kx KILLCHAR 025
5 kx
5 kx #
5 kx # Default initial "umask" value used by login(1) on non-PAM enabled systems.
5 kx # Default "umask" value for pam_umask(8) on PAM enabled systems.
5 kx # UMASK is also used by useradd(8) and newusers(8) to set the mode for new
5 kx # home directories if HOME_MODE is not set.
5 kx # 022 is the default value, but 027, or even 077, could be considered
5 kx # for increased privacy. There is no One True Answer here: each sysadmin
5 kx # must make up their mind.
5 kx UMASK 022
5 kx
5 kx #
5 kx # HOME_MODE is used by useradd(8) and newusers(8) to set the mode for new
5 kx # home directories.
5 kx # If HOME_MODE is not set, the value of UMASK is used to create the mode.
5 kx #HOME_MODE 0700
5 kx
5 kx #
5 kx # Password aging controls:
5 kx #
5 kx # PASS_MAX_DAYS Maximum number of days a password may be used.
5 kx # PASS_MIN_DAYS Minimum number of days allowed between password changes.
5 kx # PASS_WARN_AGE Number of days warning given before a password expires.
5 kx #
5 kx PASS_MAX_DAYS 99999
5 kx PASS_MIN_DAYS 0
5 kx PASS_WARN_AGE 7
5 kx
5 kx #
5 kx # Min/max values for automatic uid selection in useradd
5 kx #
5 kx UID_MIN 1000
5 kx UID_MAX 60000
5 kx # System accounts
5 kx SYS_UID_MIN 101
5 kx SYS_UID_MAX 999
5 kx
5 kx #
5 kx # Min/max values for automatic gid selection in groupadd
5 kx #
5 kx GID_MIN 1000
5 kx GID_MAX 60000
5 kx # System accounts
5 kx SYS_GID_MIN 101
5 kx SYS_GID_MAX 999
5 kx
5 kx #
5 kx # Max number of login retries if password is bad
5 kx #
5 kx LOGIN_RETRIES 5
5 kx
5 kx #
5 kx # Max time in seconds for login
5 kx #
5 kx LOGIN_TIMEOUT 60
5 kx
5 kx #
5 kx # Which fields may be changed by regular users using chfn - use
5 kx # any combination of letters "frwh" (full name, room number, work
5 kx # phone, home phone). If not defined, no changes are allowed.
5 kx # For backward compatibility, "yes" = "rwh" and "no" = "frwh".
5 kx #
5 kx CHFN_RESTRICT frwh
5 kx
5 kx #
5 kx # Only works if compiled with MD5_CRYPT defined:
5 kx # If set to "yes", new passwords will be encrypted using the MD5-based
5 kx # algorithm compatible with the one used by recent releases of FreeBSD.
5 kx # It supports passwords of unlimited length and longer salt strings.
5 kx # Set to "no" if you need to copy encrypted passwords to other systems
5 kx # which don't understand the new algorithm. Default is "no".
5 kx #
5 kx # This variable is deprecated. You should use ENCRYPT_METHOD.
5 kx #
5 kx #MD5_CRYPT_ENAB no
5 kx
5 kx #
5 kx # Only works if compiled with ENCRYPTMETHOD_SELECT defined:
5 kx # If set to MD5 , MD5-based algorithm will be used for encrypting password
5 kx # If set to SHA256, SHA256-based algorithm will be used for encrypting password
5 kx # If set to SHA512, SHA512-based algorithm will be used for encrypting password
5 kx # If set to BCRYPT, BCRYPT-based algorithm will be used for encrypting password
5 kx # If set to DES, DES-based algorithm will be used for encrypting password (default)
5 kx # Overrides the MD5_CRYPT_ENAB option
5 kx #
5 kx ENCRYPT_METHOD SHA256
5 kx
5 kx #
5 kx # Only works if ENCRYPT_METHOD is set to SHA256 or SHA512.
5 kx #
5 kx # Define the number of SHA rounds.
5 kx # With a lot of rounds, it is more difficult to brute forcing the password.
5 kx # But note also that it more CPU resources will be needed to authenticate
5 kx # users.
5 kx #
5 kx # If not specified, the libc will choose the default number of rounds (5000).
5 kx # The values must be inside the 1000-999999999 range.
5 kx # If only one of the MIN or MAX values is set, then this value will be used.
5 kx # If MIN > MAX, the highest value will be used.
5 kx #
5 kx #SHA_CRYPT_MIN_ROUNDS 5000
5 kx #SHA_CRYPT_MAX_ROUNDS 5000
5 kx
5 kx #
5 kx # Only works if ENCRYPT_METHOD is set to BCRYPT.
5 kx #
5 kx # Define the number of BCRYPT rounds.
5 kx # With a lot of rounds, it is more difficult to brute-force the password.
5 kx # However, more CPU resources will be needed to authenticate users if
5 kx # this value is increased.
5 kx #
5 kx # If not specified, 13 rounds will be attempted.
5 kx # If only one of the MIN or MAX values is set, then this value will be used.
5 kx # If MIN > MAX, the highest value will be used.
5 kx #
5 kx #BCRYPT_MIN_ROUNDS 13
5 kx #BCRYPT_MAX_ROUNDS 13
5 kx
5 kx #
5 kx # List of groups to add to the user's supplementary group set
5 kx # when logging in on the console (as determined by the CONSOLE
5 kx # setting). Default is none.
5 kx #
5 kx # Use with caution - it is possible for users to gain permanent
5 kx # access to these groups, even when not logged in on the console.
5 kx # How to do it is left as an exercise for the reader...
5 kx #
5 kx # Most of these groups are self-explanatory, but in the case of
5 kx # "lp", it is because group lp is needed to use a scanner that
5 kx # is part of a multifunction printer.
5 kx #
5 kx # Note that users are added to these default groups only when
5 kx # logging into a shell with /bin/login, not when using a login
5 kx # manager such as kdm. In that case, users who should have
5 kx # hardware access must be added to the appropriate groups
5 kx # when the user is added with adduser or useradd, or by editing
5 kx # /etc/group directly, preferably using "vigr"
5 kx #
5 kx CONSOLE_GROUPS floppy:audio:cdrom:video:lp:scanner
5 kx
5 kx #
5 kx # Should login be allowed if we can't cd to the home directory?
5 kx # Default in no.
5 kx #
5 kx DEFAULT_HOME yes
5 kx
5 kx #
5 kx # If defined, this command is run when removing a user.
5 kx # It should remove any at/cron/print jobs etc. owned by
5 kx # the user to be removed (passed as the first argument).
5 kx #
5 kx #USERDEL_CMD /usr/sbin/userdel_local
5 kx
5 kx #
5 kx # Enable setting of the umask group bits to be the same as owner bits
5 kx # (examples: 022 -> 002, 077 -> 007) for non-root users, if the uid is
5 kx # the same as gid, and username is the same as the primary group name.
5 kx #
5 kx # This also enables userdel to remove user groups if no members exist.
5 kx #
5 kx USERGROUPS_ENAB yes
5 kx
5 kx #
5 kx # If set to a non-nul number, the shadow utilities will make sure that
5 kx # groups never have more than this number of users on one line.
5 kx # This permit to support split groups (groups split into multiple lines,
5 kx # with the same group ID, to avoid limitation of the line length in the
5 kx # group file).
5 kx #
5 kx # 0 is the default value and disables this feature.
5 kx #
5 kx #MAX_MEMBERS_PER_GROUP 0
5 kx
5 kx #
5 kx # If useradd should create home directories for users by default (non
5 kx # system users only)
5 kx # This option is overridden with the -M or -m flags on the useradd command
5 kx # line.
5 kx #
5 kx #CREATE_HOME yes
5 kx
Radix cross Linux
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
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