copies updated NIS databases (or maps) from the master NIS server to
the slave servers within a NIS domain. It is normally run only on
the NIS master by
after the master databases are changed.
does not invoke
by default, the
line must be commented out.
first constructs a list of NIS slave servers by reading the NIS map
A destination host (or a list of hosts with multiple -h commands)
can also be specified on the command line.
A "transfer map" request is sent to the NIS serger at each slave, along
with the information needed by the transfer agent ypxfr(8) to callback
to yppush, which may be printed the result to stderr. Messages are
also printed when a transfer is not possible; for instance when the request
message is undeliverable.
Specify a particular domain. The NIS domain of the local host system is
used by default. If the local host's domain name is not set, the domain
name must be specified with this flag.
The timeout flag is used to specify a timeout value in seconds. This timeout
controls how long
will wait for a response from a slave server before sending a
map transfer request to the next slave server in the list.
will wait 90 seconds. For big maps, this is not long enough.
--parallel #, -p #
normally performs transfers serially, meaning that it will
send a map transfer request to one slave server and then wait for
it to respond before sending the next map transfer request to the
next slave server. In environments with many slaves, it is more
efficient to initiate several map transfers at once so that the
transfers can take place in parallel.
It is not possible to run in parallel and assign a fixed port with
specify a port for
to listen on. By default,
to assign it a random port number.
It is not possible to assign a port with this option and run in parallel with
The host flag can be used to transfer a map to a user-specified machine or
group of machines instead of the list of servers contained in
map. A list of hosts can be specified by using multiple
instances of the
Verbose mode: causes
to print debugging messages as it runs. Note specifying this flag twice
even more verbose.