ypxfr_2perday(1M)
NAME
ypxfr, ypxfr_1perday, ypxfr_1perhour, ypxfr_2perday -
transfer NIS map from a NIS server to host
SYNOPSIS
/usr/lib/netsvc/yp/ypxfr [-c] [-f] [ -C tid prog server] [-
d ypdomain] [-h host] [-s ypdomain] mapname
DESCRIPTION
The ypxfr command moves an NIS map in the default domain for
the local host to the local host by making use of normal NIS
services. It creates a temporary map in the directory
/var/yp/ypdomain (this directory must already exist;
ypdomain is the default domain for the local host), fills it
by enumerating the map's entries, fetches the map parameters
(master and order number), and loads them. It then deletes
any old versions of the map and moves the temporary map to
the real name.
If run interactively, ypxfr writes its output to the termi-
nal. However, if it is started without a controlling termi-
nal, and if the log file /var/yp/ypxfr.log exists, it
appends all its output to that file. Since ypxfr is most
often run from the privileged user's crontab file, or by
ypserv, the log file can retain a record of what was
attempted, and what the results were.
For consistency between servers, ypxfr should be run period-
ically for every map in the NIS data base. Different maps
change at different rates: a map might not change for months
at a time, for instance, and can therefore be checked only
once a day. Some maps might change several times per day. In
such a case, you might want to check hourly for updates. A
crontab(1) entry can be used to automatically perform
periodic updates. Rather than having a separate crontab
entry for each map, you can group commands to update several
maps in a shell script. Examples (mnemonically named) are in
/usr/sbin/yp: ypxfr_1perday, ypxfr_2perday, and
ypxfr_1perhour.
Refer to ypfiles(4) for an overview of the NIS name service.
OPTIONS
- c Do not send a "Clear current map" request to the local
ypserv process. Use this flag if ypserv is not running
locally at the time you are running ypxfr. Otherwise,
ypxfr complains that it cannot communicate with the
local ypserv, and the transfer fails.
-f Force the transfer to occur even if the version at the
master is not more recent than the local version.
-C tid prog server
This option is for use only by ypserv. When ypserv
starts ypxfr, it specifies that ypxfr should call back
a yppush process at the host server, registered as
program number prog, and waiting for a response to
transaction tid.
-d ypdomain
Specify a domain other than the default domain.
-h host
Get the map from host, regardless of the master. If
host is not specified, ypxfr asks the NIS service for
the name of the master, and tries to get the map from
there. host must be a valid host name.
-s ypdomain
Specify a source domain from which to transfer a map
that should be the same across domains.
FILES
/var/yp/ypxfr.log
Log file
/usr/lib/netsvc/yp/ypxfr_1perday
Script to run one transfer per day, for use with
cron(1M)
/usr/lib/netsvc/yp/ypxfr_2perday
Script to run two transfer per day, for use with
cron(1M)
/usr/lib/netsvc/yp/ypxfr_1perhour
Script for hourly transfers of volatile maps
/var/yp/ypdomain
NIS domain
/usr/spool/cron/crontabs/root
Privileged user's crontab file
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
ypxfr Only
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWnisu |
|_____________________________|_____________________________|
ypxfr_1perday, ypxfr_1perhour, and ypxfr_2perday
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWypu |
|_____________________________|_____________________________|
SEE ALSO
crontab(1), cron(1M), ypinit(1M)yppush(1M), ypserv(1M),
ypfiles(4), attributes(5)
Man(1) output converted with
man2html