ping判断网络连通性(检测IP是否可达)

#shell
for x in `seq 1 255`
do
        #echo $x
        ip=10.10.1.$x
        ping -c 2 $ip > /dev/null
        if [ $? == 0 ];then
                echo "$ip is alive"
        else
                echo "$ip is unavialable"
        fi
done

#python3

import subprocess
import threading
import IPy
import queue

ip = IPy.IP('10.10.1.0/24')
num_worker_threads = 100

def do_work(item):
    retcode = subprocess.call('ping -c 2 %s > /dev/null' % item, shell=True)
    if retcode == 0:
        #print("{0} is alive".format(item))
        with open('alive.txt','a+') as f:
            print(item, end='\n', file=f)
    else:
        #print("{0} is unreachable".format(item))
        with open('unreachable.txt', 'a+') as f:
            print(item, end='\n', file=f)

def worker():
    while True:
        item = q.get()
        if item is None:
            break
        do_work(item)
        q.task_done()

q = queue.Queue()
threads = []
for i in range(num_worker_threads):
    t = threading.Thread(target=worker)
    t.start()
    threads.append(t)

for item in ip:
    q.put(item)

# block until all tasks are done
q.join()

# stop workers
for i in range(num_worker_threads):
    q.put(None)
for t in threads:
    t.join()