比如现在需要对172.16.50.0/24网段的ip进行检查，检查哪些ip现在被占用，哪些ip没有被占用，可以通过ping命令来检查，脚本如下:

[root@uatdns01 opt]# vim /opt/ping.sh

#!/bin/bash

. /etc/init.d/functions

for var in {1..254};

do

ip=172.16.50.$var

ping -c2 $ip >/dev/null 2>&1

if [ $? = 0 ];then

action "$ip" /bin/true

else

action "$ip" /bin/false

fi

done

[root@uatdns01 opt]# chmod 755 /opt/ping.sh

[root@uatdns01 opt]# sh /opt/ping.sh

172.16.50.1 [ OK ]

172.16.50.2 [FAILED]

172.16.50.3 [FAILED]

172.16.50.4 [FAILED]

172.16.50.5 [FAILED]

.........

.........

172.16.50.99 [ OK ]

172.16.50.100 [ OK ]

172.16.50.101 [ OK ]

172.16.50.102 [ OK ]

172.16.50.103 [ OK ]

172.16.50.104 [ OK ]

172.16.50.105 [ OK ]

172.16.50.106 [ OK ]

172.16.50.107 [ OK ]

172.16.50.108 [ OK ]

172.16.50.109 [ OK ]

172.16.50.110 [ OK ]

172.16.50.111 [FAILED]

172.16.50.112 [ OK ]

获取172.16.60.0/24网段可用ip的shell脚本

[root@ansible-server ~]# cat ip_ping.sh

#!/bin/bash

ip=1

while [ $ip != "254" ]; do

ping 172.16.60.$ip -c 2 | grep -q "ttl=" && echo "172.16.60.$ip yes" || echo "172.16.60.$ip no"

ip=`expr "$ip" "+" "1"`

done

执行:

[root@ansible-server ~]# sh ip_ping.sh

172.16.60.1 yes

172.16.60.2 no

172.16.60.3 no

.............

172.16.60.24 yes

172.16.60.25 yes

172.16.60.26 no

.............

如果只打印可用ip, 则脚本修改如下:

[root@ansible-server ~]# cat ip_ping.sh

#!/bin/bash

ip=1

while [ $ip != "254" ]; do

ping 172.16.60.$ip -c 2 | grep -q "ttl=" && echo "172.16.60.$ip yes" || echo "172.16.60.$ip no" >/dev/null 2>&1

ip=`expr "$ip" "+" "1"`

done

执行:

[root@ansible-server ~]# sh ip_ping.sh

172.16.60.1 yes

172.16.60.21 yes

172.16.60.22 yes

172.16.60.23 yes

172.16.60.24 yes

172.16.60.25 yes

172.16.60.31 yes

172.16.60.32 yes

172.16.60.33 yes

172.16.60.34 yes

172.16.60.35 yes

172.16.60.36 yes

172.16.60.37 yes

172.16.60.38 yes

172.16.60.39 yes

获取172.16.50.0/24, 172.16.51.0/24, 172.16.60.0/24 三个网段的可用ip

[root@ansible-server ~]# cat ip_ping.sh

#!/bin/bash

ip=1

while [ $ip != "254" ]; do

ping 172.16.50.$ip -c 2 | grep -q "ttl=" && echo "172.16.50.$ip yes" || echo "172.16.50.$ip no" >/dev/null 2>&1

ip=`expr "$ip" "+" "1"`

ping 172.16.51.$ip -c 2 | grep -q "ttl=" && echo "172.16.51.$ip yes" || echo "172.16.51.$ip no" >/dev/null 2>&1

ip=`expr "$ip" "+" "1"`

ping 172.16.60.$ip -c 2 | grep -q "ttl=" && echo "172.16.60.$ip yes" || echo "172.16.60.$ip no" >/dev/null 2>&1

ip=`expr "$ip" "+" "1"`

done

执行:

[root@ansible-server ~]# sh ip_ping.sh

172.16.50.1 yes

172.16.51.11 yes

172.16.50.16 yes

172.16.50.19 yes

172.16.51.20 yes

172.16.60.21 yes

172.16.50.22 yes

172.16.60.24 yes

172.16.50.25 yes

172.16.50.31 yes

172.16.60.33 yes

172.16.51.35 yes

172.16.60.36 yes

172.16.60.39 yes

172.16.51.41 yes

172.16.51.44 yes

172.16.50.52 yes

172.16.51.53 yes

172.16.50.55 yes

172.16.50.58 yes

172.16.51.65 yes

..................