找到沒使用的ip地址 plus版

功能:使用ping 命令測試某個網段可能未使用的 ip地址

腳本如下:

# cat sip.sh  
#!/bin/bash 
#Not used to find the ip 
#20120415 
 
#variables 
user=`id -u` 
 
 
#function 
netmask() { 
  mask=(0 128.0.0.0 192.0.0.0 224.0.0.0 240.0.0.0 248.0.0.0 252.0.0.0 254.0.0.0 \ 
      255.0.0.0 255.128.0.0 255.192.0.0 255.224.0.0 255.240.0.0 255.248.0.0 255.252.0.0 255.254.0.0 \ 
      255.255.0.0 255.255.128.0 255.255.192.0 255.255.224.0 255.255.240.0 255.255.248.0 255.255.252.0 255.255.254.0 \ 
      255.255.255.0 255.255.255.128 255.255.255.192 255.255.255.224 255.255.255.240 255.255.255.248 255.255.255.252 255.255.255.254 \  
      255.255.255.255) 
  echo ${mask[$1]}  
} 
# 
sping() { 
#echo $1 $2 $3 
echo "The following ICMP packet not through" 
for((ip=$1;ip<=$2;ip  ));do 
    ping -f -c 5 -W 1 "${3}$ip" > /dev/null || echo "${3}$ip"                          
done 
}   
 
 
#main 
if [ $user -ne 0 ];then 
    echo "must root !!" 
    exit 1 
fi 
# 
if [ $# -eq 0 ];then 
    echo "Usage: $0 10.10.10.0/24" 
    echo -e " 
    59.151.*.*/24 
    114.112.*.*/26
    10.10.10.0/24" 
    exit 1 
fi 
# 
shell_arg=$(echo $1 | awk -F/ '{print $2}') 
get_ip_head=$(echo $1 | awk -F/ '{print $1}'| awk -F. '{print $1"."$2"."$3"."}') 
get_ip_trailing=$(echo $1 | awk -F/ '{print $1}'| awk -F. '{print $4}') 
get_mask=$(netmask $shell_arg) 
get_gj=$(echo $((256-$(echo $get_mask | awk -F. '{print $4}')))) 
put_ip_start=$(echo $(($get_ip_trailing   1))) 
put_ip_end=$(echo $(($get_ip_trailing   $get_gj - 2))) 
# 
#echo -e "$shell_arg $get_mask $get_gj $get_ip_head $get_ip_trailing $put_ip_start $put_ip_end" 
sping $put_ip_start $put_ip_end $get_ip_head                          

使用方法:

sh sip.sh 10.0.0.0/24 
The following ICMP packet not through 
10.0.0.1 
10.0.0.2 
10.0.0.4 
10.0.0.8 

參考

http://dngood.blog.51cto.com/446195/667009

結束

使用網段自動算出ip地址,根據ping命令判斷這些ip是否在用.

本文出自 「dongnan」 博客,請務必保留此出處http://dngood.blog.51cto.com/446195/837534