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.\" @(#)timed.8 6.6 (Berkeley) 4/27/91
is the time server daemon and is normally invoked
It synchronizes the host's time with the time of other
machines in a local area network running
These time servers will slow down the clocks of some machines
and speed up the clocks of others to bring them to the average network time.
The average network time is computed from measurements of clock differences
timestamp request message.
is based on a master-slave
is started on a machine, it asks the master for the network time
and sets the host's clock to that time.
After that, it accepts synchronization messages periodically sent by
to perform the needed corrections on the host's clock.
It also communicates with
in order to set the date globally,
If the machine running the master crashes, then the slaves will elect
a new master from among slaves running with the
flag will remain a slave.
to trace the messages it receives in the
Tracing can be turned on or off by the program
checks for a master time server on each network to which
it is connected, except as modified by the options described below.
It will request synchronization service from the first master server
flag, it will provide synchronization service on any attached networks
on which no current master server was detected.
Such a server propagates the time computed by the top-level master.
flag, followed by the name of a network which the host is connected to
overrides the default choice of the
network addresses made by the program.
flag appears, that network name is added to a list of valid networks.
All other networks are ignored.
flag, followed by the name of a network to which the host is connected
overrides the default choice of the network addresses made by the program.
flag appears, that network name is added to a list of networks to ignore.
All other networks are used by the time daemon.
flags are meaningless if used together.
.Bl -tag -width /var/log/timed.masterlog -compact
.It Pa /var/log/timed.log
.It Pa /var/log/timed.masterlog
log file for master timed
.%T "TSP: The Time Synchronization Protocol for UNIX 4.3BSD"
projects / unix-history / blob