详解python连接telnet和ssh的两种方式

Telnet 连接方式

#!/usr/bin/env python
# coding=utf-8

import time
import telnetlib
import logging

__author__ = 'Evan'

save_log_path = 'result.txt'
file_mode = 'a+'
format_info = '％(asctime)s - ％(filename)s[line:％(lineno)d] - ％(levelname)s: ％(message)s'

logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)

# 添加记录 记录器功能
fh = logging.FileHandler(save_log_path, mode=file_mode)
fh.setLevel(logging.DEBUG)
fh.setFormatter(logging.Formatter(format_info))
logger.addHandler(fh)
# 增加显示 记录器功能
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
ch.setFormatter(logging.Formatter(format_info))
logger.addHandler(ch)

def telnet_handle(host='', port=''):
   handle = telnetlib.Telnet(host, port, timeout=10)
   handle.set_debuglevel(2)  # Display connect info (send command & received info)
   logger.debug('Connect host: {} port: {} successful'.format(host, port))

try:
       #获取登录提示‘login：' 后输入密码。
       handle.read_until('login:', timeout=5)

#发送命令 登录，用户名：admin 密码：admin
       handle.write('admin\n')  #用户名
       #如果有输入密码的提示符可以打开这一条，并修正确的密码提示符
       #handle.read_until('输入密码提示符', timeout=5)
       time.sleep(1)
       handle.write('admin\n')  #密码
       time.sleep(1)
       handle.write('en\n')  #执行指令
       time.sleep(1)
       handle.write('sys\n')  #执行指令
       time.sleep(1)
       handle.write('display running-config\n')  #执行指令
       time.sleep(1)
       handle.write('show stack\n')  #执行指令
       time.sleep(1)

#读取所有信息
       result = handle.read_very_eager()  
       logger.info('Received info: {}'.format(result))
   finally:
       handle.close()

if __name__ == '__main__':
   telnet_handle(host='192.168.10.1', port='23')

ssh连接方式

#!/usr/bin/env python
# coding=utf-8

import paramiko,sys,time

client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
#连接SSH服务器
client.connect("192.168.10.1",22,"admin","admin")
#执行命令的方式一   连接linux发送固定指令
stdin,stdout,stderr = client.exec_command("whoami")
time.sleep(2)
print(stdout.read())
stdin,stdout,stderr = client.exec_command("cat /root/lzhi/c_call_python.txt")
print(stdout.read())
stdin,stdout,stderr = client.exec_command("ls")
print(stdout.read())
stdin,stdout,stderr = client.exec_command("ls -la")
print(stdout.read())

#执行命令的方式二  获取命令行参数，并且删除参数1.保留需要执行的命令
buf = sys.argv
del buf[0]
str1 = ' '.join(buf)
print(str1)
#执行命令行参数给出的命令
stdin,stdout,stderr = client.exec_command(str1)
#time.sleep(1)
print(stdout.read())

来源：https://blog.csdn.net/github_39657856/article/details/121009899