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

1. #!/usr/bin/python
2. # -*- coding: utf-8 -*-
3.  
4. '''https://www.ibm.com/developerworks/cn/linux/l-cn-pexpect2/index.html'''
5.  
6. import pexpect
7. import types
8.  
9.  
10. username = "root"
11. ip = "192.168.***.***"
12. password = "****"
13. pex = pexpect.spawn('ssh %s@%s' % (username, ip))
14.  
15.  
16. def _check(pattern, timeout=120):
17. i = pex.expect(pattern, timeout=timeout)
18. return i
19.  
20.  
21. def sendcr(cmd):
22. if pex == None:
23. return 0
24. n = pex.send("%s\r" % cmd)
25. return n
26.  
27.  
28. def getexec(cmd):
29.  
30. child = pexpect.spawn(cmd)
31. child.expect(pexpect.EOF)
32. return child.before
33.  
34.  
35. if __name__ == '__main__':
36.  
37. checklist1 = [["(?i)Connection refused", False],
38. ["(?i)Host key verification failed.", False],
39. ["(?i)VENUSTECH AUDIT SYSTEM MA1000", True],
40. # ["(?i)#\[/]",True], # hpux
41. ["(?i).+>", True], # windows
42. [".+[>$#]\s*$", True], # debian
43. ["(?i)Last login", True],
44. ["(?i)access denied", False],
45. ["(?i)NT_STATUS_LOGON_FAILURE", False],
46. ["(?i)are you sure you want to continue connecting", "yes"],
47. ["(?i)authentication fail(?!ure)", False],
48. ["(?i)connection closed by remote host", False],
49. ["(?i)login failed", False],
50. ["(?i)login incorrect", False],
51. ["(?i)need to be root", False],
52. ["(?i)no route to host", False],
53. ["(?i)not found", False],
54. ["(?i)Bad secrets", False],
55. ["(?i)incorrect password", False],
56. ["(?i)permission denied", False],
57. # ["(?i)terminal type",terminal_type],
58. ["This private key will be ignored.", False],
59. ["(?i)no route to host", False],
60. ["(?i)press 'Enter' key to proceed", "\r"],
61. ["(?i)Y/N", 'Y'],
62. [pexpect.EOF, False],
63. [pexpect.TIMEOUT, False],
64. ["(?i)Enter passphrase for key .*:", password],
65. ["(?i)assword", password],
66. ["(?i)passwd", password],
67. ["(?i)sername", username],
68. ["(?i)(?<!sful )login", username],
69. ["(?i)----------------------------------------------------------------", True]]
70.  
71. checklist2 = [i[0] for i in checklist1]
72. while True:
73. i = _check(checklist2)
74. print i, checklist1[i], checklist1[i][1]
75. if (type(checklist1[i][1]) is types.BooleanType):
76. if type(checklist1[i][1]):
77. break
78. else:
79. sendcr(checklist1[i][1])
80.  
81. cmd = "ls -l /etc/rsyslog.conf"
82. result = getexec(cmd)
83. print "result", result

打印结果：

1. 26 ['(?i)assword', '***'] ***
2. 5 ['(?i)Last login', True] True
3. result -rw-r--r--. 1 root root 3167 Mar 13 11:24 /etc/rsyslog.conf

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