NAME¶clockdiff - measure clock difference between hosts
clockdiff [-o] [-o1] destination
DESCRIPTION¶clockdiff Measures clock difference between us and destination with 1 msec resolution using ICMP TIMESTAMP  packets or, optionally, IP TIMESTAMP option  option added to ICMP ECHO. 
SEE ALSO¶ping(8), arping(8), tracepath(8).
REFERENCES¶ ICMP ECHO, RFC0792, page 14.
 ICMP TIMESTAMP, RFC0792, page 16.
 IP TIMESTAMP option, RFC0791, 3.1, page 16.
AUTHOR¶clockdiff was compiled by Alexey Kuznetsov <firstname.lastname@example.org>. It was based on code borrowed from BSD timed daemon.
SECURITY¶clockdiff requires CAP_NET_RAW capability to be executed. It is safe to be used as set-uid root.
AVAILABILITY¶clockdiff is part of iputils package.