343 lines
10 KiB
Plaintext
343 lines
10 KiB
Plaintext
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#
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# /etc/login.defs - Configuration control definitions for the login package.
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#
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# Three items must be defined: MAIL_DIR, ENV_SUPATH, and ENV_PATH.
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# If unspecified, some arbitrary (and possibly incorrect) value will
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# be assumed. All other items are optional - if not specified then
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# the described action or option will be inhibited.
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#
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# Comment lines (lines beginning with "#") and blank lines are ignored.
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#
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# Modified for Linux. --marekm
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# REQUIRED for useradd/userdel/usermod
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# Directory where mailboxes reside, _or_ name of file, relative to the
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# home directory. If you _do_ define MAIL_DIR and MAIL_FILE,
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# MAIL_DIR takes precedence.
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#
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# Essentially:
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# - MAIL_DIR defines the location of users mail spool files
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# (for mbox use) by appending the username to MAIL_DIR as defined
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# below.
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# - MAIL_FILE defines the location of the users mail spool files as the
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# fully-qualified filename obtained by prepending the user home
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# directory before $MAIL_FILE
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#
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# NOTE: This is no more used for setting up users MAIL environment variable
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# which is, starting from shadow 4.0.12-1 in Debian, entirely the
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# job of the pam_mail PAM modules
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# See default PAM configuration files provided for
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# login, su, etc.
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#
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# This is a temporary situation: setting these variables will soon
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# move to /etc/default/useradd and the variables will then be
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# no more supported
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MAIL_DIR /var/mail
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#MAIL_FILE .mail
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#
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# Enable logging and display of /var/log/faillog login failure info.
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# This option conflicts with the pam_tally PAM module.
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#
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FAILLOG_ENAB yes
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#
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# Enable display of unknown usernames when login failures are recorded.
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#
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# WARNING: Unknown usernames may become world readable.
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# See #290803 and #298773 for details about how this could become a security
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# concern
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LOG_UNKFAIL_ENAB no
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#
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# Enable logging of successful logins
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#
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LOG_OK_LOGINS no
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#
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# Enable "syslog" logging of su activity - in addition to sulog file logging.
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# SYSLOG_SG_ENAB does the same for newgrp and sg.
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#
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SYSLOG_SU_ENAB yes
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SYSLOG_SG_ENAB yes
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#
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# If defined, all su activity is logged to this file.
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#
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#SULOG_FILE /var/log/sulog
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#
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# If defined, file which maps tty line to TERM environment parameter.
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# Each line of the file is in a format something like "vt100 tty01".
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#
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#TTYTYPE_FILE /etc/ttytype
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#
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# If defined, login failures will be logged here in a utmp format
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# last, when invoked as lastb, will read /var/log/btmp, so...
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#
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FTMP_FILE /var/log/btmp
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#
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# If defined, the command name to display when running "su -". For
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# example, if this is defined as "su" then a "ps" will display the
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# command is "-su". If not defined, then "ps" would display the
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# name of the shell actually being run, e.g. something like "-sh".
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#
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SU_NAME su
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#
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# If defined, file which inhibits all the usual chatter during the login
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# sequence. If a full pathname, then hushed mode will be enabled if the
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# user's name or shell are found in the file. If not a full pathname, then
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# hushed mode will be enabled if the file exists in the user's home directory.
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#
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HUSHLOGIN_FILE .hushlogin
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#HUSHLOGIN_FILE /etc/hushlogins
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#
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# *REQUIRED* The default PATH settings, for superuser and normal users.
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#
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# (they are minimal, add the rest in the shell startup files)
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ENV_SUPATH PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
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ENV_PATH PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
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#
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# Terminal permissions
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#
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# TTYGROUP Login tty will be assigned this group ownership.
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# TTYPERM Login tty will be set to this permission.
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#
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# If you have a "write" program which is "setgid" to a special group
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# which owns the terminals, define TTYGROUP to the group number and
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# TTYPERM to 0620. Otherwise leave TTYGROUP commented out and assign
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# TTYPERM to either 622 or 600.
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#
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# In Debian /usr/bin/bsd-write or similar programs are setgid tty
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# However, the default and recommended value for TTYPERM is still 0600
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# to not allow anyone to write to anyone else console or terminal
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# Users can still allow other people to write them by issuing
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# the "mesg y" command.
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TTYGROUP tty
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TTYPERM 0600
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#
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# Login configuration initializations:
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#
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# ERASECHAR Terminal ERASE character ('\010' = backspace).
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# KILLCHAR Terminal KILL character ('\025' = CTRL/U).
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# UMASK Default "umask" value.
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#
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# The ERASECHAR and KILLCHAR are used only on System V machines.
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#
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# UMASK is the default umask value for pam_umask and is used by
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# useradd and newusers to set the mode of the new home directories.
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# 022 is the "historical" value in Debian for UMASK
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# 027, or even 077, could be considered better for privacy
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# There is no One True Answer here : each sysadmin must make up his/her
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# mind.
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#
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# If USERGROUPS_ENAB is set to "yes", that will modify this UMASK default value
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# for private user groups, i. e. the uid is the same as gid, and username is
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# the same as the primary group name: for these, the user permissions will be
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# used as group permissions, e. g. 022 will become 002.
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#
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# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
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#
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ERASECHAR 0177
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KILLCHAR 025
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UMASK 022
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#
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# Password aging controls:
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#
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# PASS_MAX_DAYS Maximum number of days a password may be used.
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# PASS_MIN_DAYS Minimum number of days allowed between password changes.
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# PASS_WARN_AGE Number of days warning given before a password expires.
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#
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PASS_MAX_DAYS 99999
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PASS_MIN_DAYS 0
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PASS_WARN_AGE 7
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#
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# Min/max values for automatic uid selection in useradd
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#
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UID_MIN 1000
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UID_MAX 60000
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# System accounts
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#SYS_UID_MIN 100
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#SYS_UID_MAX 999
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#
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# Min/max values for automatic gid selection in groupadd
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#
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GID_MIN 1000
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GID_MAX 60000
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# System accounts
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#SYS_GID_MIN 100
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#SYS_GID_MAX 999
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#
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# Max number of login retries if password is bad. This will most likely be
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# overriden by PAM, since the default pam_unix module has it's own built
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# in of 3 retries. However, this is a safe fallback in case you are using
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# an authentication module that does not enforce PAM_MAXTRIES.
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#
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LOGIN_RETRIES 5
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#
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# Max time in seconds for login
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#
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LOGIN_TIMEOUT 60
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#
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# Which fields may be changed by regular users using chfn - use
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# any combination of letters "frwh" (full name, room number, work
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# phone, home phone). If not defined, no changes are allowed.
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# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
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#
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CHFN_RESTRICT rwh
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#
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# Should login be allowed if we can't cd to the home directory?
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# Default in no.
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#
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DEFAULT_HOME yes
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#
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# If defined, this command is run when removing a user.
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# It should remove any at/cron/print jobs etc. owned by
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# the user to be removed (passed as the first argument).
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#
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#USERDEL_CMD /usr/sbin/userdel_local
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#
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# If set to yes, userdel will remove the user's group if it contains no
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# more members, and useradd will create by default a group with the name
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# of the user.
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#
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# Other former uses of this variable such as setting the umask when
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# user==primary group are not used in PAM environments, such as Debian
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#
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USERGROUPS_ENAB yes
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#
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# Instead of the real user shell, the program specified by this parameter
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# will be launched, although its visible name (argv[0]) will be the shell's.
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# The program may do whatever it wants (logging, additional authentification,
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# banner, ...) before running the actual shell.
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#
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# FAKE_SHELL /bin/fakeshell
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#
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# If defined, either full pathname of a file containing device names or
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# a ":" delimited list of device names. Root logins will be allowed only
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# upon these devices.
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#
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# This variable is used by login and su.
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#
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#CONSOLE /etc/consoles
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#CONSOLE console:tty01:tty02:tty03:tty04
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#
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# List of groups to add to the user's supplementary group set
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# when logging in on the console (as determined by the CONSOLE
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# setting). Default is none.
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#
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# Use with caution - it is possible for users to gain permanent
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# access to these groups, even when not logged in on the console.
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# How to do it is left as an exercise for the reader...
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#
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# This variable is used by login and su.
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#
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#CONSOLE_GROUPS floppy:audio:cdrom
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#
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# If set to "yes", new passwords will be encrypted using the MD5-based
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# algorithm compatible with the one used by recent releases of FreeBSD.
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# It supports passwords of unlimited length and longer salt strings.
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# Set to "no" if you need to copy encrypted passwords to other systems
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# which don't understand the new algorithm. Default is "no".
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#
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# This variable is deprecated. You should use ENCRYPT_METHOD.
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#
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#MD5_CRYPT_ENAB no
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#
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# If set to MD5 , MD5-based algorithm will be used for encrypting password
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# If set to SHA256, SHA256-based algorithm will be used for encrypting password
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# If set to SHA512, SHA512-based algorithm will be used for encrypting password
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# If set to DES, DES-based algorithm will be used for encrypting password (default)
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# Overrides the MD5_CRYPT_ENAB option
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#
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# Note: It is recommended to use a value consistent with
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# the PAM modules configuration.
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#
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ENCRYPT_METHOD SHA512
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#
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# Only used if ENCRYPT_METHOD is set to SHA256 or SHA512.
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#
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# Define the number of SHA rounds.
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# With a lot of rounds, it is more difficult to brute forcing the password.
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# But note also that it more CPU resources will be needed to authenticate
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# users.
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#
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# If not specified, the libc will choose the default number of rounds (5000).
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# The values must be inside the 1000-999999999 range.
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# If only one of the MIN or MAX values is set, then this value will be used.
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# If MIN > MAX, the highest value will be used.
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#
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# SHA_CRYPT_MIN_ROUNDS 5000
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# SHA_CRYPT_MAX_ROUNDS 5000
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# GRANT_AUX_GROUP_SUBIDS yes
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################# OBSOLETED BY PAM ##############
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# #
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# These options are now handled by PAM. Please #
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# edit the appropriate file in /etc/pam.d/ to #
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# enable the equivelants of them.
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#
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###############
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#MOTD_FILE
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#DIALUPS_CHECK_ENAB
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#LASTLOG_ENAB
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#MAIL_CHECK_ENAB
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#OBSCURE_CHECKS_ENAB
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#PORTTIME_CHECKS_ENAB
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#SU_WHEEL_ONLY
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#CRACKLIB_DICTPATH
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#PASS_CHANGE_TRIES
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#PASS_ALWAYS_WARN
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#ENVIRON_FILE
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#NOLOGINS_FILE
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#ISSUE_FILE
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#PASS_MIN_LEN
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#PASS_MAX_LEN
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#ULIMIT
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#ENV_HZ
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#CHFN_AUTH
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#CHSH_AUTH
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#FAIL_DELAY
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################# OBSOLETED #######################
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# #
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# These options are no more handled by shadow. #
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# #
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# Shadow utilities will display a warning if they #
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# still appear. #
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# #
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###################################################
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# CLOSE_SESSIONS
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# LOGIN_STRING
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# NO_PASSWORD_CONSOLE
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# QMAIL_DIR
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