#!/bin/bash
function loop-until-up() {
until nmap -sn $1 | grep "Host is up" > /dev/null ; do
sleep 5s
done
}
function alarm-while-up() {
while nmap -sn $1 | grep "Host is up" > /dev/null ; do
printf '\7'
sleep 2s
done
}
function main() {
echo Waiting for $1...
loop-until-up $1
echo -n $1 went UP at
date +" %H:%M, %a, %m/%d/%g"
alarm-while-up $1
echo -n $1 went back down at
date +" %H:%M, %a, %m/%d/%g"
main $1
}
if [ -z $1 ] ; then
echo Missing IP address
else
main $1
fi
Comments
0 B
|👍
/👎