Help with script, shutdown if no ping responce

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# 1  
Old 01-07-2008
Help with script, shutdown if no ping responce

Hi, i would like to create a script that shuts down the system if the power fails, basicly the solaris box would load the script at startup.

Ping every 20 secs
If cannot get responce 3 times in a row send init 0 to the system.

Simple but effective, as wont be on the ups backup, so the solaris system will know the power is down and it will shutdown.

Im sure it wont be hard to do im just new to unix, could someone help me with this?
# 2  
Old 01-07-2008
anyone? Smilie
# 3  
Old 01-07-2008

If I am reading this want to send a shutdown command to a machine, the power to which, has failed. If the power has failed the machine will be dead in the water and not be able to respond to *any* commands.

Have you described your requirement clearly and accurately as at present, unless I have badly misread it, it doesn't make a whole hep of sense
# 4  
Old 01-07-2008
I have a unix machine which is on a UPS with only about 15mins battery life, what i would like to happen is the unix machine shutdown safely if the power fails. The way i want to do it, would have the unix machine ping my cable modem every 20 secs, which is not on the UPS, so if the ping was to have no responce the modem would probably be off, which means the power would have failed.

I would like the unix machine to shutdown if it cant contact the cable modem 3 times in a row via ping.
# 5  
Old 01-07-2008

while true
      sleep 300
      for d in a b c
            if /usr/sbin/ping cable-ip
      if $REBOOT
             shutdown -g 1 -y -i 5

or better still, remove outer while loop and install as cron job.

Note, Solaris "ping" works quite differently to other platform pings.
# 6  
Old 01-07-2008
Thanks! would this work with solaris 10?
# 7  
Old 01-07-2008
Give it a go.... Smilie

Make sure you understand it all before you install it, as it has to run as root to run shutdown.
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