Linux中使用python测试主机存活 Linux系统CentOS Linux release 7.3.1611 (Core) py版本Python 2.7.5

下面是最初的情况

#/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import time
import subprocess
import threading
from threadpool import ThreadPool
import threadpool
import re
from Queue import Queue

def ping_call():
    while not IP_QUEUE.empty():
        ip=IP_QUEUE.get()
        command='ping -c 2 -W 1 %s'%ip
        print(command)
        result=subprocess.Popen(command,
                       shell=True,stdout=subprocess.PIPE) //A
        s=result.stdout.read()
        e = "ttl" in s
        if e:
            print('ip地址：{} ping ok'.format(ip))
        else:
            print('ip地址：{} ping fall'.format(ip))      //B

if __name__ == '__main__':
    network=input('请输入网段>>>').strip()
    host=input('请输入主机范围以空格隔开>>>').strip().split()
    a,b=host[0],host[1]
    print(network.split('.'))
    if len(network.split('.'))==3 and a.isdigit() and b.isdigit() and re.match('\d{1,3}\.\d{1,3}\.\d{1,3}',network):
        a=int(a)
        b=int(b)
        start_time = time.time()
        IP_QUEUE=Queue()
    threads=[]
    for i in range(a,b+1):
            IP_QUEUE.put(network+'.'+str(i))
    for i in range(50):
        thread=threading.Thread(target=ping_call)
        thread.start()
        threads.append(thread)
    for thread in threads:
        thread.join()
        print("程序耗时{:.2f}".format(time.time() - start_time))

上面的例子也可用改为subprocess.call,在linux系统中命令结果成功为真就时0 ，失败则为假，windows系统上面只关心命令本身是不是可用执行，不关心结果，所以只能用在Linux系统上面

修改标注A到B的代码结果为：

#/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import time
import subprocess
import threading
import re
from Queue import Queue

def ping_call():
    while not IP_QUEUE.empty():
        ip=IP_QUEUE.get()
        command='ping -c 2 -W 1 %s'%ip
        print(command)
        result=subprocess.call(command,
                       shell=True,stdout=subprocess.PIPE)

        if result:
            print('ip地址：{} ping fail'.format(ip))
        else:
                    print('ip地址：{} ping ok'.format(ip))

if __name__ == '__main__':
    network=input('请输入网段>>>').strip()
    host=input('请输入主机范围以空格隔开>>>').strip().split()
    a,b=host[0],host[1]
    print(network.split('.'))
    if len(network.split('.'))==3 and a.isdigit() and b.isdigit() and re.match('\d{1,3}\.\d{1,3}\.\d{1,3}',network):
        a=int(a)
        b=int(b)
        start_time = time.time()
        IP_QUEUE=Queue()
    threads=[]
    for i in range(a,b+1):
            IP_QUEUE.put(network+'.'+str(i))
    for i in range(50):
        thread=threading.Thread(target=ping_call)
        thread.start()
        threads.append(thread)
    for thread in threads:
        thread.join()
        print("程序耗时{:.2f}".format(time.time() - start_time))

进一步改版为：

#/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import time
import subprocess
import threading
from threadpool import ThreadPool
import threadpool
import re
from Queue import Queue

def ping_call():
    while not IP_QUEUE.empty():
        ip=IP_QUEUE.get()
        command='ping -c 2 -W 1 %s'%ip
        file=open('/dev/null','w')
        result=subprocess.call(command,
                       shell=True,stdout=file,stderr=file)
        if result:
            print('ip地址：{} ping fail'.format(ip))
        else:
                    print('ip地址：{} ping ok'.format(ip))
            success.append(ip.split('.')[-1])
        file.close()

if __name__ == '__main__':
    network=input('请输入网段>>>').strip()
    host=input('请输入主机范围以空格隔开>>>').strip().split()
    a,b=host[0],host[1]
    print(network.split('.'))
    if len(network.split('.'))==3 and a.isdigit() and b.isdigit() and re.match('\d{1,3}\.\d{1,3}\.\d{1,3}',network):
        a=int(a)
        b=int(b)
        start_time = time.time()
        IP_QUEUE=Queue()
    threads=[]
    success=[]
    for i in range(a,b+1):
            IP_QUEUE.put(network+'.'+str(i))
    for i in range(50):
        thread=threading.Thread(target=ping_call)
        thread.start()
        threads.append(thread)
    for thread in threads:
        thread.join()
        print("程序耗时{:.2f}".format(time.time() - start_time))
    print("成功主机有：")
    for i in success:
        print(i)

那么上面的几个脚本如何执行呢，这里也是碰到了很多坑，主要是输入的数据要打引号

[root@centos7 ~]# python ping_host.py
请输入网段>>>'192.168.0'
请输入主机范围以空格隔开>>>'1 10'
['', '', '']
ip地址：192.168.0.1 ping ok
ip地址：192.168.0.4 ping fail
ip地址：192.168.0.3 ping fail
ip地址：192.168.0.5 ping fail
ip地址：192.168.0.9 ping fail
ip地址：192.168.0.6 ping fail
ip地址：192.168.0.8 ping fail
ip地址：192.168.0.2 ping fail
ip地址：192.168.0.7 ping fail
程序耗时2.16
成功主机有：
1