企业内部网段检测有多少主机存活

前言：这个脚本初衷来自于之前看了网络班苟国齐的空间发布的脚本，今天改版了一下，感觉挺方便的。

环境简介：

IP地址段	外网	内网
10.0.0.0	Yes	No
172.16.1.0	No	Yes

1).编写脚本

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[root@db02 oldboy20160103] # cat check_hosts.sh #!/bin/bash #no.1 Check functions [ ! -f /etc/ini .d /functions ] && source /etc/init .d /functions #no.2 judge $1 [ $ # -ne 1 ] && { echo "USAGE: $0 IPaddr" exit 1 } #no.3 PING= "ping -w1 -c 1" IP=$1 #no.4 for n in ` seq 10` do { $PING $1${n} &> /dev/null if [ $? - eq 0 ] then action "$1${n} is online" /bin/true else action "$1${n} is gone" /bin/false fi } done

 2).执行脚本

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[root@db02 oldboy20160103] # sh check_hosts.sh 10.0.0. 10.0.0.1 is online [ OK ] 10.0.0.2 is online [ OK ] 10.0.0.3 is gone [FAILED] 10.0.0.4 is gone [FAILED] 10.0.0.5 is gone [FAILED] 10.0.0.6 is gone [FAILED] 10.0.0.7 is online [ OK ] 10.0.0.8 is online [ OK ] 10.0.0.9 is gone [FAILED] 10.0.0.10 is gone [FAILED]

提示：10.0.0.1 是我的NAT桥接地址，10.0.0.1 是我的NAT网关地址。

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[root@db02 oldboy20160103] # sh check_hosts.sh 172.16.1. 172.16.1.1 is gone [FAILED] 172.16.1.2 is gone [FAILED] 172.16.1.3 is gone [FAILED] 172.16.1.4 is gone [FAILED] 172.16.1.5 is gone [FAILED] 172.16.1.6 is gone [FAILED] 172.16.1.7 is online [ OK ] 172.16.1.8 is online [ OK ] 172.16.1.9 is gone [FAILED] 172.16.1.10 is gone [FAILED]