dtsdate(1m)															       dtsdate(1m)

NAME

       dtsdate - Sets local clock from a remote dtsd server host

SYNOPSIS

       dtsdate [-q] [-s] [-u] remote_host [nsecs]

ARGUMENTS

       Queries	the difference in time between the local host and the remote host, but does not change the local clock.  The returned result (2 if
       the time would have been reset, 1 if there was an error, and 0 otherwise) can be used by a script to determine what action to take.  Causes
       dtsdate	to  work  silently,  without  showing  the time.  Shows the time in UTC, rather than in the current time zone.	The name or the IP
       address of a remote host that has a dtsd server.  An integer giving the number of seconds by which the remote and local host times can dif-
       fer,  without  the  local host's clock being reset.  If nsecs is 0, or if it is not specified, it is treated as if it were extremely large,
       and no resetting occurs.

DESCRIPTION

       The dtsdate command sets the local clock of a system to be the same as the host remote_host, running a dtsd server.  The purpose of dtsdate
       is  to ensure that clock skew is minimized at initial cell configuration or at host instantiation, because it is difficult to start DCE and
       its components if the skew is too great.

       Clocks among all DCE components must be within five minutes of each other, to prevent failure of CDS and of security.  Some DCE	components
       have even more stringent requirements.  For instance, a DFS file server cannot start if its local host differs from other DFS hosts by more
       than ten seconds.

       The dtsdate command can be used for adjusting a clock backwards, before DCE is running on a host.  Adjusting a clock backwards while DCE is
       running can cause many difficulties, because security and file system software generally require system time to increase monotonically.

NOTES

       The  remote  host  must be running as a DTS server.  This means that the dtsd on that system must have registered the DTS management inter-
       face, because dtsdate uses the management call to get the current time from that host.

       For dtsdate to be able to set the clock, it must run as a privileged user (root).

EXIT VALUE

       If the -q argument is given, dtsdate returns 2 if the remote time and local time differ by more than nsecs, 1 if there was an error, and  0
       otherwise.

       If the -q argument is not given, dtsdate returns 1 if there was an error, and 0 otherwise.

EXAMPLES

       With only the host argument:
	 dtsdate remotehost

       dtsdate prints out the time on the remote host.

       In this example:
	 dtsdate -s -q remotehost 10

       dtsdate does not print out the remote host's time.  If the times differ by more than 10 seconds, it returns the value of 1, otherwise 0.

       In the next example:
	 dtsdate  -s  remotehost  10  dtsdate  sets  the  clock  if  it differed from the remote clock by more than 10 seconds.  It does this work
       silently, because of the -s option.

       The following example shows a shell script that uses the return value of dtsdate:
	 dtsdate -s -q remhost 10
	 result = $?
	 if [ $result -eq 0 ] ; then
	     echo "Time is within tolerence."
	 elif [ $result -eq 1 ] ; then
	     echo "Could not contact remote host." >&2
	 else				   # result = 2
	   if dtsdate remhost 10; then	   # it failed!
	       echo "Could not set the clock." >&2
	   fi
	 fi

RELATED INFORMATION

       Commands: dtsd(1m)

																       dtsdate(1m)