Linux Shell Scripting Cookbook - Third Edition

How to do it...

The next example script will find the visible machines on the network using the ping command:

#!/bin/bash 
#Filename: ping.sh 
# Change base address 192.168.0 according to your network. 
 
for ip in 192.168.0.{1..255} ; 
do 
  ping $ip -c 2 &> /dev/null ; 
 
  if [ $? -eq 0 ]; 
  then 
    echo $ip is alive 
  fi 
done 

The output resembles this:

$ ./ping.sh 
192.168.0.1 is alive 
192.168.0.90 is alive