TH TIMESYNC 8
SH NAME
timesync \- synchronize the system clock to a time source
SH SYNOPSIS
B aux/timesync
[
B -a
I accuracy
]
[
B -frnDdLil
]
[
I timeserver
]
SH DESCRIPTION
B Aux/timesync
synchronizes the system clock to a time source, by default a
file server.
The options are:
TP
B -f
synchronize to a file server.  If
I timeserver
is missing, use
BR /srv/boot .
TP
B -r
synchronize to the local real time clock,
BR #r/rtc .
TP
B -L
used with
B -r
to indicate the real time clock is in
local time rather than GMT.  This is
useful on PCs that also run the
Windows OS.
TP
B -n
synchronize to an NTP server.  If
I timeserver
is missing, dial the server
BR udp!$ntp!ntp .
TP
B -D
print debugging to standard error
TP
B -d
put file containing last determined clock
frequency in directory
IR dir ,
default
BR /tmp .
TP
B -i
stands for impotent.
I Timesync
announces what it would do but doesn't do it.
This is useful for tracking alternate time sources.
TP
B -a
specifies the accuracy in nanoseconds to which the
clock should be synchronized.  This determines
how often the reference clock is accessed.
TP
B -l
turns on logging to
BR /sys/log/timesync .
SH FILES
TF /tmp/ts.<sysname>.<type>.timeserver
TP
B /tmp/ts.<sysname>.<type>.timeserver
where the last frequency guess is kept
TP
B /sys/log/timesync
log file
SH SOURCE
B /sys/src/cmd/aux/timesync.c

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