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    Command:

    libuser.conf

    
    
    
    

    FILE FORMAT

           libuser.conf  is a text file.  Leading and trailing white space on each
           line is ignored.  Lines starting with # are ignored.
    
           The file defines variables grouped into sections.  Each section  starts
           with a section header:
                  [section name]
           A single section header can appear more than once in the file.
    
           The  lines  following  a section header define variables from that sec-
           tion:
                  variable = value
           The value can be empty.
    
           A variable can have more than one value, specified by using  more  than
           one  line  defining  that  variable.   All  currently defined variables
           accept only the first value and ignore the others, if any.
    
    
    

    [defaults]

           create_modules
                  A list of module names  to  use  when  creating  user  or  group
                  entries, unless the application specifies a different list.  The
                  module names in the list can be separated using  space,  tab  or
                  comma.  Default value is files shadow.
    
           crypt_style
                  The  algorithm  to use for password encryption when creating new
                  passwords.  The current algorithm may be retained when  changing
                  a password of an existing user, depending on the application.
    
                  Possible  values  are des, md5, blowfish, sha256 and sha512, all
                  case-insensitive.   Unrecognized  values  are  treated  as  des.
                  Default value is des.
    
           hash_rounds_min, hash_rounds_max
                  These  variables  specify an inclusive range of hash rounds used
                  when crypt_style is sha256 or sha512.  A number of  hash  rounds
                  is  chosen  from  this  interval  randomly.   A larger number of
                  rounds makes password  checking,  and  brute-force  attempts  to
                  guess  the  password  by reversing the hash, more CPU-intensive.
                  The number of  rounds  is  restricted  to  the  interval  [1000,
                  999999999].
    
                  If  only  one of the above variables is specified, the number of
                  rounds used is specified by  the  other  variable.   If  neither
                  variable is specified, the number of rounds is chosen by libc.
    
                  A list of module names to use when not creating  user  or  group
                  entries, unless the application specifies a different list.  The
                  module names in the list can be separated using  space,  tab  or
                  comma.  Default value is files shadow.
    
           skeleton
                  The  directory  containing  files  to copy to newly created home
                  directories.  Default value is /etc/skel.
    
    
    

    [import]

           login_defs
                  A path to the login.defs file from shadow.  If this variable  is
                  defined,  the variables from the named file are used in place of
                  some  libuser  variables.   Variables  explicitly   defined   in
                  libuser.conf are not affected by contents of login.defs.
    
                  The following variables are imported:
                                       |
                  Variable             | Imported as
                  ---------------------+-------------------------------
                  ENCRYPT_METHOD       | defaults/crypt_style
                  GID_MIN              | groupdefaults/LU_GIDNUMBER
                  MAIL_DIR             | defaults/mailspooldir
                  MD5_CRYPT_ENAB       | defaults/crypt_style
                  PASS_MAX_DAYS        | userdefaults/LU_SHADOWMAX
                  PASS_MIN_DAYS        | userdefaults/LU_SHADOWMIN
                  PASS_WARN_AGE        | userdefaults/LU_SHADOWWARNING
                  SHA_CRYPT_MIN_ROUNDS | defaults/hash_rounds_min
                  SHA_CRYPT_MAX_ROUNDS | defaults/hash_rounds_max
                  UID_MIN              | userdefaults/LU_UIDNUMBER
    
                  The  following variables are not imported: CREATE_HOME, GID_MAX,
                  MAIL_FILE, SYSLOG_SG_ENAB, UID_MAX,  UMASK,  USERDEL_CMD,  USER-
                  GROUPS_ENAB
    
           default_useradd
                  A  path  to the default/useradd file from useradd in shadow.  If
                  this variable is defined, the variables from the named file  are
                  used  in  place of some libuser variables.  Variables explicitly
                  defined  in  libuser.conf  are  not  affected  by  contents   of
                  default/useradd.
    
                  The following variables are imported:
                           |
                  Variable | Imported as
                  ---------+--------------------------------
                  EXPIRE   | userdefaults/LU_SHADOWEXPIRE
                  GROUP    | userdefaults/LU_GIDNUMBER
                  HOME     | userdefaults/LU_HOMEDIRECTORY
                  (not system users).  Default value is 500.
    
           All other variables have the same names as  the  attribute  names  from
           <libuser/entity.h>  and define attribute values.  Either the macro name
           (e.g. LU_GECOS) or the macro content (e.g. pw_gecos) can  be  used;  if
           both  are  used,  the  one appearing later in the configuration file is
           used.
    
           The % character in the value  of  the  variable  introduces  an  escape
           sequence:  %n  is  replaced by the user name, %d is replaced by current
           date in days since the epoch, %u is replaced by the user's UID.   There
           is no way to escape the % character and avoid this substitution.
    
           After  the  userdefaults section is processed, modules may define addi-
           tional attributes or even override the attributes defined in this  sec-
           tion.
    
    
    

    [groupdefaults]

           The  groupdefaults  section  is  similar to userdefaults.  There is one
           special variable:
    
           LU_GIDNUMBER
                  A decimal number, the first allowed GID value for regular groups
                  (not system groups).  Default value is 500.
    
           The  other  variables follow the same rules as in the userdefaults sec-
           tion, except that %n and %u are replaced by the group name and  group's
           GID, respectively.
    
           After  the groupdefaults section is processed, modules may define addi-
           tional attributes or even override the attributes defined in this  sec-
           tion.
    
    
    

    [files]

           Configures  the files module, which manages /etc/group and /etc/passwd.
           The configuration variables are probably useful only for libuser devel-
           opment.
    
           directory
                  The  directory  containing  the group and passwd files.  Default
                  value is /etc.
    
           nonroot
                  Allow module initialization when not invoked as the root user if
                  the value is yes.
                  Allow module initialization when not invoked as the root user if
                  the value is yes.
    
    
    

    [ldap]

           Configures  the  ldap module, which manages an user database accessible
           using LDAP.
    
           userBranch
                  The LDAP suffix for user entities.  Default value is  ou=People.
    
           groupBranch
                  The  LDAP suffix for group entities.  Default value is ou=Group.
    
           server A domain name or an URI of the LDAP server.  The URI can use the
                  ldap  or the ldaps protocol.  When a simple domain name is used,
                  the connection fails if TLS can not be used; an  URI  using  the
                  ldap  protocol  allows connection without TLS.  Default value is
                  ldap.
    
           basedn The base DN of the server.  Default value is  dc=example,dc=com.
    
           binddn A  DN for binding to the server.  If the value is empty or bind-
                  ing using this DN fails, a DN of  uid=user,userBranch,basedn  is
                  used,  where  userBranch and basedn are variables from this sec-
                  tion and user is the user name  of  the  invoking  user,  unless
                  overridden  by  the  user  variable  from this section.  Default
                  value is cn=manager,dc=example,dc=com.
    
           user   The SASLv2 identity for authenticating to the LDAP server,  also
                  overrides the user name for generating a bind DN.  Default value
                  is the name of the invoking user.
    
           password
                  The password used for a simple bind by default.  If  not  speci-
                  fied,  there is no default and the user must supply the password
                  each time.
    
           authuser
                  The SASLv2 authorization user, if non-empty.  Default  value  is
                  empty.
    
           bindtype
                  Name of the SASLv2 application.  Default value is empty.
    
           domain Domain used by libuser for  the  SASLv2  authentication  object.
                  Default value is empty.
    
    
    

    BUGS

           Invalid lines in the configuration file (or the imported shadow config-
           uration files) are silently ignored.
    
    
    

    FILES

           /etc/libuser.conf
                  The default location of the configuration file. Can be  overrid-
                  den  by the LIBUSER_CONF environment variable, except in set-uid
                  or set-gid programs.
    
    
    

    libuser 2010-02-08 libuser.conf(5)

    
    
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