最近接到一个需求，拿到一批IP列表做PING的操作，当然可以利用fping，自己也用多线程写了一个，还不错，6w条IP在15分钟内PING完，记录一下代码吧。
#!/usr/bin/python
import os,sys,time
import threading
import re
import subprocess
lifeline = re.compile(r"[0-9]+\.\d*")
deadline = re.compile(r"100% packet loss")
def ping(ip):
pingaling = subprocess.Popen(["ping","-q", "-c 3", ip], shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
while 1:
pingaling.stdout.flush()
line = pingaling.stdout.readline()
tmp=re.sub(ip,"",line)
if not line: break
igot = re.findall(lifeline,tmp)
deadping = re.findall(deadline,tmp)
if len(igot)==4:
#print ip,igot[2]
pingoutput=str(ip.strip())+','+str(igot[2])
if deadping:
#print ip,deadping
pingoutput=str(ip.strip())+','+'200000'
output = open('/home/abc/upload/ip_list.txt.output', 'a+')
output.write(pingoutput+'\n')
def main():
iplist=open("/home/abc/upload/ip_list.txt", "r")
print time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
for i in iplist:
ip=i
while threading.activeCount()>300:
time.sleep(0.1)
t=threading.Thread(target=ping,args=([ip,]))
t.start()
print time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
if __name__=='__main__':
main()