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Python查看远程主机端口是否开放以及BashShell实现

无论是选择Python还是选择Bash Shell都可以很容易检测远程主机端口是否开放,下面的Python例子纯属锦上添花,仅供参考!

源码可参见Github: https://raw.githubusercontent.com/DingGuodong/LinuxBashShellScriptForOps/master/functions/net/tcp/port/checkRemoteHostPortStatus.py

使用方法:如果用户使用不带参数的方式执行,则需要用户修改Python脚本参数host和port,如果用户使用带参数的方式执行则需要加host和port默认用空格隔开或者参考usage()函数。

源码如下:

#!/usr/bin/python # encoding: utf-8 # -*- coding: utf8 -*- import socket import sys # import os import time   def usage():     print("""     Function: check remote host's tcp port if is open     Usage: %s <host ipaddress> <tcp port>     Example: python %s 127.0.0.1 22     Others useful cli:     strace time:         strace -q -f -c python checkRemoteHostPortStatus.py 127.0.0.1 22     Bash shell implement:         nc -w 3 127.0.0.1 22 >/dev/null 2>&1 && echo ok || echo failed         nmap 127.0.0.1 -p 22 | grep open >/dev/null 2>&1 && echo ok || echo failed  """) % (__file__, sys.argv[0])     sys.exit(0)   host = "" port = 0 timeout = 3 retry = 3  argc = len(sys.argv) if not (argc == 1 or argc == 3):     print("Error: incorrect number of arguments or unrecognized option")     usage() if argc == 1:     pass else:     if sys.argv[1] is not None:         host = sys.argv[1]      if sys.argv[2] is not None:         port = sys.argv[2]  if host == "":     print "host is empty, please sign new one."     sys.exit(1) if port == 0:     print "port is empty, please sign new one."     sys.exit(1) else:     try:         type(int(port)) is not int     except ValueError:         print type(port)         print "type port /"%s/" is not int, please sign new one" % port         sys.exit(1)  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(timeout)  for attempt in range(0, retry):     try:         s.connect((str(host), int(port)))         print "connect to server %s port %s successfully!" % (host, port)         break     except Exception:         print "connect to server %s port %s failed in %s times! " % (host, port, attempt + 1)         # os.system("sleep 1")         time.sleep(1)  s.close()

tag:python,检测端口,远程端口

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