Setting the time on an AP9606 remotely.

[fnarfbargle]

This might be of interest. I run this script once a day. It queries the card for the date and if it doesn't match, sets the date and time. It also runs regardless once a month just to keep the clock in check.

I had 2 cards with flat "Snaphat" batteries, so they needed a clock set not infrequently. Now it's just run to save me thinking about it. Replaced one with an P9617 and it has ntp, so the loop is still there.

#!/bin/bash
# Won't set while web user or shell user logged in.

DATE=date +%m/%d/%Y
DAY=date +%d

# Set the clock if the date doesn't match or it's the first of the month.
# The RTC does drift slightly, so this keeps it on track

for i in 192.168.2.231 ; do
IND=snmpwalk -v1 -cpublic $i 1.3.6.1.4.1.318.2.1.6.1 | cut -f2 -d'"'
if [ "$IND" != "$DATE" -o "$DAY" -eq 1 ] ; then
echo Dates don't match or 1st of the month
snmpset -cprivate -v1 $i 1.3.6.1.4.1.318.2.1.6.1.0 s "$DATE" > /dev/null
TIME=date +%H:%M:%S
snmpset -cprivate -v1 $i 1.3.6.1.4.1.318.2.1.6.2.0 s "$TIME" > /dev/null
fi;
done;

Sorry, I completely munged the formatting and have no idea how to fix the quoted bits. Anyway, you get the idea. SNMP works just fine for setting the clock.

[danielewood]

Thanks for this, I have added the relevant information to the readme.