#!/bin/csh -f
#Birds-Eye Ping.csh ScriptBack to Birds-Eye.Net Script Archive
#
#<![CDATA[#<PRE>
######################### DO NOT REMOVE THIS HEADER #################################
# #
# Birds-Eye Network Services, LLC #
# Birds-Eye.Net's Generic PING script #
# ping.csh #
# #
# Run this script periodically (every 5 or so minutes) to check for network #
# connectivity between local host and remote host. #
# #
# By: Bruce Bahlmann #
# (C) Copyright, Birds-Eye Network Services, LLC, ALL RIGHTS RESERVED #
# #
# NOTICE: All use of the software (in whole or in part) is restricted. Any sale, #
# marketing, distribution, or transfer of software copies, associated data, source #
# code, information (including manuals), configuration files, or licenses are #
# restricted. Internal use of this software requires a license and/or express #
# written permission from Birds-Eye Network Services, LLC. Any other use of this #
# software is restricted. This software is not sold as part of an enterprise #
# license and thus is restricted as such. #
# #
# To purchase access rights to this software contact: #
# Birds-Eye.Net, LLC #
# info[_at_]birds-eye.net #
# OR go to www.birds-eye.net/consulting to obtain a license #
# #
######################### DO NOT REMOVE THIS HEADER #################################
# Generic PING script
# Created: 03/24/2000
# Version: 01.00 03/24/2000 bbahlmann Initial release
# USAGE: ping.csh <ip> <email@domain.com>
# Run this script periodically (every 5 or so minutes) to check for network
# connectivity between local host and remote host. Script will ping the
# remote host and if NOT successful, it will save this DOWN state in $dfile
# which is particular to the IP being pinged. If, on the next subsequent
# ping, the down state is NOT restored an email will be sent to the email
# address provided. If the down state is restored, the DOWN state will be
# cleared and the script will reset as if the network connection was ever
# dropped. Note that only ONE email will be sent.
#
# TODO: May want to record repeated ping failures as this may be the sign of
# a potential network problem. Note in order to troubleshoot repeated ping
# failures one should record the date/time of each failure.
#
if ($#argv > 0) then
set dfile = "/tmp/$argv[1]"
set sent = "/tmp/sent$argv[1]"
set to = "5" # timeout for ping operation
set ping = "/usr/sbin/ping"
## use tail to only capture last line of output
set cmd = "$ping $argv[1] $to"
set rsp = `$cmd | tail -1`
if ("$rsp" !~ *alive) then
## Host is detected as being DOWN
set date = `date`
if (-e $sent) then
echo "alert already sent"
else if ((-e $dfile) && ! -e $sent) then
## alert
echo "send alert"
mailx -s "Possible Outage" $argv[2] < $dfile
echo "$date" > $sent
else
echo "ping failed -- saving state"
echo "unable to reach [$argv[1]] on $date" > $dfile
endif
else
## Host is detected as being ALIVE
if (-e $dfile) then
echo "Clearing previous ALARM state"
rm $dfile
if (-e $sent) then
rm $sent
endif
else
echo "$rsp"
endif
endif
else
echo "USAGE: $0 <IP> <email@domain.com>"
endif
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