check_traceroute.sh

#!/bin/sh

################################################################################
# AUTHOR: Vladimir Vuksan
# E-mail: Check http://vuksan.com/linux/
# License: GPL
################################################################################
if [ $# -ne 1 ]; then
    echo "Usage: $0 <hostname>"
    exit;
fi

# Get the IP of the host then do traceroute against it.
IP=`/usr/bin/gethostip ${1} | cut -f2 -d" "`

TRACEROUTE=`/usr/sbin/traceroute ${IP} 2>&1 | grep "(${IP}) "`

RESULT=`echo $TRACEROUTE | grep -c ms`

if [ $RESULT -eq 1 ]; then
    echo TRACERT OK: `echo $TRACEROUTE | cut -f4- -d" "`
    exit 0
else
    echo TRACERT CRITICAL: Host unreachable
    exit 2
fi