yppasswdd(1M)yppasswdd(1M)NAME
yppasswdd: rpc.yppasswdd - daemon for modifying Network Information
Service passwd database
SYNOPSIS
passwd_file log_file] [arg1 arg2 ...]]
directory] log_file] [arg1 arg2 ...]]
Remarks
The Network Information Service (NIS) was formerly known as Yellow
Pages (yp). Although the name has changed, the functionality of the
service remains the same.
DESCRIPTION
The daemon handles password change requests from (see yppasswd(1)). It
changes a password entry in the passwd and shadow files. The passwd
and shadow files provide the basis for the passwd.byname and
passwd.byuid maps. Entries in the passwd or shadow files are changed
only if the password presented by matches the encrypted password of the
entry. All password files are located in the directory.
If the option is given, the passwd or shadow files are placed under the
directory path that is the argument to
should be executed only on the master Network Information Service (NIS)
server for the passwd database (map). The daemon is not executed by
default, nor can it be started by (see inetd(1M)). To enable automatic
startup of at boot time, the variable should be set to 1 in file on the
master NIS server.
The daemon in HP-UX 11i version 3 supports the shadow mode. The system
can be converted to shadow mode by using and reverted by using The
variable must be set to 1 in file on the master NIS server to support
the shadow mode in NIS.
The server does not insist on the presence of a shadow file unless
there is no option present or the directory named with the option is
Options
recognizes the following options and command-line arguments:
Log diagnostic and error messages to
log_file. These messages are not available
if is started without the option.
Information logged to the file includes date
and time of the message, the host name,
process ID and name of the function generat‐
ing the message, and the message itself.
Note that different services can share a
single log file because enough information
is included to uniquely identify each mes‐
sage.
If these are given, then these fields may not be
changed remotely using is HP specific.
After the password or shadow file is modified, and
if using the option, executes to update the
NIS passwd database (see ypmake(1M)). Any
arguments following the flag are passed to
To ensure that the passwd map is rebuilt to
contain the new password and all slave NIS
servers have their passwd maps properly
updated to include the change, always use
the option to but do not use the argument to
The directory input specifies which directory contains the
passwd file (and the
shadow file when the system is in shadow
mode).
Note that the directory specified must con‐
tain the file named "passwd". If shadow mode
is enabled, then the directory specified
must contain a file called "shadow".
EXAMPLES
Assume the daemon is started on the master NIS server as follows:
This indicates that the ASCII file from which the NIS passwd database
is built is When this file is updated by a request from the NIS passwd
database is rebuilt and copied to all slave NIS servers in the master's
NIS domain (see domainname(1)).
Log messages are written to the file
WARNINGS
uses lock file to get exclusive access to passwd_file when updating it.
The file may persist if passwd_file is being updated and
· The system crashes or
· is killed using (see kill(1) and signal(2)).
File must be removed before can function properly again.
also uses when updating (see vipw(1M)). As a result, competes with
when it updates passwd_file if passwd_file is
AUTHOR
was developed by Sun Microsystems, Inc.
FILES
lock file used when updating
passwd_file
SEE ALSOdomainname(1), kill(1), yppasswd(1), inetd(1M), vipw(1M), ypmake(1M),
signal(2), yppasswd(3N), passwd(4), publickey(4), ypfiles(4),
pwconv(1M), pwunconv(1M), shadow(4).
yppasswdd(1M)
