root@ubuntu:~# vi check_ip.rb
require 'rubygems'
index = 1
max = 20
while (max-index) >= 0
puts index
name = %x(ip route | head -n 1 | awk '{printf $5}')
ips = %x(ip address | grep #{name} | awk '{print $2}').split("\n").map {|a| a.split("/").first}
max = ips.size-1
ip = ips[index]
route = %x(ip route | head -n 1)
if route =~ /via/
cmd = "ip route change default via #{route.split(' ')[2]} dev #{name} src #{ip}"
cmd = system cmd
else
cmd = "ip route change default dev #{name} src #{ip}"
cmd = system cmd
end
puts "change ip: #{cmd}"

if cmd
result = system 'curl --connect-timeout 10 http://119.28.20.165:8777/.json '
File.open("./result.txt","a") do |file|
file.puts "#{ip}:#{result}"
end
index += 1
end
end
puts "done"
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centos： yum -y install ruby
ubuntu：sudo apt-get install ruby
root@ubuntu:~# ruby check_ip.rb
用途：检测机器中所有IP段是否能够访问一个网站。结果显示在result.txt里面
ubuntu 已经测试可用

检测是否已经安装了ruby

rpm -qa | grep ruby
yum list | grep ruby