yppasswdd, rpc.yppasswdd - server for modifying NIS password file
/usr/etc/rpc.yppasswdd filename [ adjunct_file ] [ -nogecos ] [
-noshell ] [ -nopw ] [ -m argument1 argument2 ... ]
This program is available with the Networking software installation
option. Refer to for information on how to install optional software.
yppasswdd is a server that handles password change requests from
yppasswd(1). Unless an adjunct_file is specified, it changes a pass-
word entry in filename, which is assumed to be in the format of
passwd(5). filename is the password file that provides the basis for
the passwd.byname and passwd.byuid maps. This should not be confused
with the servers /etc/passwd file which controls access to the server.
In particular this file should not contain an entry for the super user.
If an adjunct_file is specified or /etc/security/passwd.adjunct exists,
this file will be changed instead of the filename. An entry in file-
name or adjunct_file will only be changed if the password presented by
yppasswd(1) matches the encrypted password of that entry.
If the -noshell -nogecos or -nopw options are given then these fields
may not be changed remotely using chfn, chsh, or passwd(1).
If the -m option is given, then after filename or adjunct_file is modi-
fied, a make(1) will be performed in /var/yp. Any arguments following
the flag will be passed to make.
This server is not run by default, nor can it be started up from
inetd(8C). If it is desired to enable remote password updating for the
Network Information Service (NIS), then an entry for yppasswdd should
be put in the /etc/rc file of the host serving as the master for the
NIS passwd file.
If the NIS password file is stored as /var/yp/passwd, then to have
password changes propagated immediately, the server should be invoked
/usr/etc/rpc.yppasswdd /var/yp/passwd -m passwd
make(1), yppasswd(1), passwd(1), passwd(5), passwd.adjunct(5),
ypfiles(5), inetd(8C), ypmake(8)
The password file specified to rpc.yppasswdd may not be a link.
The Network Information Service (NIS) was formerly known as Sun Yellow
Pages (YP). The functionality of the two remains the same; only the
name has changed. The name Yellow Pages is a registered trademark in
the United Kingdom of British Telecommunications plc, and may not be
used without permission.
17 December 1987 YPPASSWDD(8C)