쉘 스크립트 IP 스캔

   특정 IP 스캔

server[0]="192.168.0.3"
server[1]="192.168.0.12"
server[2]="192.168.0.24"
server[3]="192.168.0.31"
server[4]="192.168.0.45"
server[5]="192.168.0.102"
server[6]="192.168.0.214"
 
 
for (( i=0 ; i<${#server[*]} ; i++ )) ; do
ping -c 1 -w 1 ${server[$i]} &> /dev/null 
 
if [ "$?" == "0" ] ; then 
echo "${server[$i]} .. server ON!"
else
echo "${server[$i]} .. server OFF!"
fi 
done

   IP 범위 스캔

#!/bin/bash
declare -a server
 
for((i=1; i<10; i++)) ; do
server[$i]="192.168.0.$i"
done
 
for (( i=0 ; i<${#server[*]} ; i++ )) ; do
ping -c 1 -w 1 ${server[$i]} &> /dev/null 
 
if [ "$?" == "0" ] ; then 
echo "${server[$i]} .. server ON!"
else
echo "${server[$i]} .. server OFF!"
fi 
done