通过python连接Linux命令行代码实例

这篇文章主要介绍了通过python连接Linux命令行代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

代码如下

#!/usr/bin/python
# -*- coding: utf-8 -*-

'''https://www.ibm.com/developerworks/cn/linux/l-cn-pexpect2/index.html'''

import pexpect
import types

username = "root"
ip = "192.168.***.***"
password = "****"
pex = pexpect.spawn('ssh ％s@％s' ％ (username, ip))

def _check(pattern, timeout=120):
 i = pex.expect(pattern, timeout=timeout)
 return i

def sendcr(cmd):
 if pex == None:
   return 0
 n = pex.send("％s\r" ％ cmd)
 return n

def getexec(cmd):

child = pexpect.spawn(cmd)
 child.expect(pexpect.EOF)
 return child.before

if __name__ == '__main__':

checklist1 = [["(?i)Connection refused", False],
        ["(?i)Host key verification failed.", False],
        ["(?i)VENUSTECH AUDIT SYSTEM MA1000", True],
        # ["(?i)#\[/]",True],    # hpux
        ["(?i).+>", True], # windows
        [".+[>$#]\s*$", True], # debian
        ["(?i)Last login", True],
        ["(?i)access denied", False],
        ["(?i)NT_STATUS_LOGON_FAILURE", False],
        ["(?i)are you sure you want to continue connecting", "yes"],
        ["(?i)authentication fail(?!ure)", False],
        ["(?i)connection closed by remote host", False],
        ["(?i)login failed", False],
        ["(?i)login incorrect", False],
        ["(?i)need to be root", False],
        ["(?i)no route to host", False],
        ["(?i)not found", False],
        ["(?i)Bad secrets", False],
        ["(?i)incorrect password", False],
        ["(?i)permission denied", False],
        # ["(?i)terminal type",terminal_type],
        ["This private key will be ignored.", False],
        ["(?i)no route to host", False],
        ["(?i)press 'Enter' key to proceed", "\r"],
        ["(?i)Y/N", 'Y'],
        [pexpect.EOF, False],
        [pexpect.TIMEOUT, False],
        ["(?i)Enter passphrase for key .*:", password],
        ["(?i)assword", password],
        ["(?i)passwd", password],
        ["(?i)sername", username],
        ["(?i)(?<!sful )login", username],
        ["(?i)----------------------------------------------------------------", True]]

checklist2 = [i[0] for i in checklist1]
 while True:
   i = _check(checklist2)
   print i, checklist1[i], checklist1[i][1]
   if (type(checklist1[i][1]) is types.BooleanType):
     if type(checklist1[i][1]):
       break
   else:
     sendcr(checklist1[i][1])

cmd = "ls -l /etc/rsyslog.conf"
 result = getexec(cmd)
 print "result", result

打印结果：

26 ['(?i)assword', '***'] ***
5 ['(?i)Last login', True] True
result -rw-r--r--. 1 root root 3167 Mar 13 11:24 /etc/rsyslog.conf

来源：https://www.cnblogs.com/TTyb/p/6595472.html