Startup script for DD-WRT to get date from NTP server.

May or may not work:

while [ "`date +%Y`" == "1970" ]; do
 ntpclient uk.pool.ntp.org && \
 sleep 3 && \
 stopservice process_monitor && \
 sleep 3 && \
 startservice process_monitor;
 echo "done" >> "/tmp/ntp.example.txt" && \
 sleep 120;
done;
echo "end" >> "/tmp/ntp.example.txt"

Reference:

http://www.dd-wrt.com/phpBB2/viewtopic.php?t=48538