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【Python】实现服务器ping

作者:玉洁 / 发布于2016/3/15/ 704

#!/usr/bin/python 
#coding:utf-8
import multiprocessing
import re 
import sys,os
import commands
import datetime
def  pinger(ip):
    cmd='ping -c 2 %s' % (ip.strip())  #Return a copy of the string S with leading and trailing whitespace removed.
    ret = commands.getoutput(cmd)      #Return output (stdout or stderr) of executing cmd in a shell.
    loss_re=re.compile(r"received, (.*) packet loss") #Compile a regular expression pattern, returning a pattern object.
    packet_loss=loss_re.findall(ret)[0]     #Return a list of all non-overlapping matches in the string
    rtt_re=re.compile(r"rtt min/avg/max/mdev = (.*) ")
    rtts=rtt_re.findall(ret)
    #rtt.split(["/"])
    rtt=rtts[0].split('/') #Return a list of the words in the string
    rtt_min=rtt[0]
    rtt_avg=rtt[1]
    rtt_max=rtt[2]
    print "%s\t\t%s\t\t%s\t\t%s\t\t%s"%(ip,packet_loss,rtt_min,rtt_max,rtt_avg)
 
 
 
if __name__ == "__main__":
    if not os.path.exists("hosts.txt") :
    print "\033[31mhosts.txt文件不存在，请重试\033[0m" #"\033[31m字符串\033[0m"设置颜色字体
    sys.exit(1)
    now=datetime.datetime.now()
    file=open('hosts.txt','r')
    pool=multiprocessing.Pool(processes=4)  #Returns a process pool object
    result=[]
    print "########%s###########"%now
    print "IPADDRSS\t\t\tLOSS\t\tMIN\t\tMAX\t\tAVG"
    for i in file.readlines():
        if len(i)==1 or i.startswith("#"):
           continue
        result.append(pool.apply_async(pinger,(i.strip(),)))  #A variant of the apply() method which returns a result object.
    pool.close()           
    pool.join()

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