#!/usr/bin/env python# -*- coding: utf-8 -*-''''' 使用方法样例 python test20.py 192.168.1.1 (会扫描192.168.1.1-255的ip) 多线程加速后大概十几秒'''import platformimport sysimport osimport timeimport threadinglive_ip = 0def get_os(): os = platform.system() if os == "Windows": return "n" else: return "c"def ping_ip(ip_str): cmd = ["ping", "-{op}".format(op=get_os()), "1", ip_str] output = os.popen(" ".join(cmd)).readlines() for line in output: if str(line).upper().find("TTL") >= 0: print("ip: %s is ok ***" % ip_str) global live_ip live_ip += 1 breakdef find_ip(ip_prefix): ''''' 给出当前的127.0.0 ，然后扫描整个段所有地址 ''' threads = [] for i in range(1, 256): ip = '%s.%s' % (ip_prefix, i) threads.append(threading.Thread(target=ping_ip, args={ip, })) for i in threads: i.start() for i in threads: i.join()if __name__ == "__main__": print("start time %s" % time.ctime()) cmd_args = sys.argv[1:] args = "".join(cmd_args) ip_pre = '.'.join(args.split('.')[:-1]) find_ip(ip_pre) print("end time %s" % time.ctime()) print('本次扫描共检测到本网络存在%s台设备' % live_ip)

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