Intra-enterprise network segment detects how many hosts survive--shell script Pass (ii)

Intra-enterprise network segment detects how many hosts are alive

Preface: This script originally came from watching the network class Gou Qi 650) this.width=650; "src=" Http://img.baidu.com/hi/jx2/j_0058.gif "alt=" J_0058.gif "/> The space release of the script, today revised a bit, feel very convenient.

Environment Introduction:

IP Address Segment	External network	Intranet
10.0.0.0	Yes	No
172.16.1.0	No	Yes

1). scripting

[[email protected] 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. 3ping= "ping -w1 -c 1" ip=$1#no.4for 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). Execute Script

[[email protected] 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                                      &nbSp;     [failed] 

prompt: 10.0.0.1 is my NAT bridge address, and 10.0.0.1 is my NAT gateway address.

[[Email protected] 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]

This article is from the "Linux Advanced Ops Road" blog, so be sure to keep this source http://yulianhui.blog.51cto.com/10829691/1732440

Intra-enterprise network segment detects how many hosts survive--shell script Pass (ii)