pwpattern(4) — Reliant

pwpattern(4)                                                   pwpattern(4)

NAME
     pwpattern - release for global users

SYNOPSIS
     /var/yp/pwpattern

DESCRIPTION
     You can use the pwpattern file to specify whether the updating of cer-
     tain fields in the files /etc/passwd and /etc/shadow is to be influ-
     enced by the global user name. pwpattern is only evaluated if the GLO-
     BALPW variable in the file /etc/default/inet is set to "yes" or auto
     and the appropriate global user name has been activated on the NIS
     master with the ryptrans(1M) command.

     Each line in the pwpattern file must have the following format:

          user:password:UID:GID:comment:HOME-directory:Shell

     user      is either

               -  a global user name

               -  the character "*"

     comment   relates to the corresponding field in the /etc/shadow file.
               The value assigned to this field is either "yes" or "no".

     HOME-directory
               relates to the corresponding field in the /etc/shadow file.
               The value assigned to this field is either "yes" or "no".

     password  relates to the corresponding field in the /etc/shadow file.
               The value assigned to this field is either "yes" or "no".

     Shell     relates to the corresponding field in the /etc/shadow file.
               The value assigned to this field is either "yes" or "no", or

               # any comments up to end of line.

               The # character introduces a comment that terminates at the
               end of the line.

     The pwpattern file is evaluated line by line starting at the top.
     Evaluation is terminated when no more lines exist or a line containing
     the character "*" as the user entry is encountered. Comment lines are
     ignored.

     If the user entry is a global user name, all other entries in this
     line are valid for this user name only.






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pwpattern(4)                                                   pwpattern(4)

     The "*" character instead of a global user name regulates the
     overwrite rights of all users not explicitly listed in the body of the
     file.

     The effect of the values "yes" and "no" depend on the context in which
     pwpattern is used:

     If the GLOBALPW variable in the /etc/default/inet file is set to "yes"
     and the yptrans daemon is running on this host, the data transferred
     by the network administrator is written to the /etc/passwd files.

EXAMPLES
     The pwpattern contains the following entries:

          chris:YES:UID:GID:NO:YES:NO

          *:YES:UID:GID:NO:NO:NO

     The ryptrans command can be used to change the password and the home
     directory of the user chris.

     If the GLOBALPW variable in the /etc/default/inet file has been set to
     "auto" and a global user is being included for the first time, "NO" in
     the following fields in pwpattern mean

     password  the (encoded) user password is "*yp*"

     comment   "*NIS*" is entered in the comment field in /etc/passwd

     Shell     the login shell of the user is /sbin/sh

     HOME-directory
               the user is assigned /tmp as his/her home directory.

     In all above fields a global user is not accepted

     "YES" in /var/yp/pwpattern forces acceptance of the global values with
     the following differences:

     -  A very high value in the fourth entry of the local /etc/shadow file
        prevents global users from changing their passwords locally by cal-
        ling passwd. It is necessary to prevent this, because the encoded
        password is overwritten with the global encoded password every hour
        when ypxfr1hour is called.

     -  The global shell is accepted only if it is locally available; oth-
        erwise /sbin/sh is entered.

     -  If the HOME directory entered in the passwd NIS file does not exist
        on this host, /tmp is entered as the HOME directory in the local
        /etc/passwd file.



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pwpattern(4)                                                   pwpattern(4)

FILES
     /etc/passwd
     /etc/default/inet
     /etc/shadow

SEE ALSO
     ryptrans(1M), inet(4).















































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