Testing an ntp server without ntpd
Source: http://seriot.ch/ntp.php
GNU Linux
date -d@$((0x`printf c%47s|nc -uw1 10.254.253.201 123|xxd -s40 -l4 -p`-64#23GDW0))
BSD
date -r$((0x`printf c%47s|nc -uw1 ntp.metas.ch 123|xxd -s40 -l4 -p`-64#23GDW0))
Source: http://seriot.ch/ntp.php
date -d@$((0x`printf c%47s|nc -uw1 10.254.253.201 123|xxd -s40 -l4 -p`-64#23GDW0))
date -r$((0x`printf c%47s|nc -uw1 ntp.metas.ch 123|xxd -s40 -l4 -p`-64#23GDW0))