Paramiko:从远程执行命令的标准输出中读取 [英] Paramiko: read from standard output of remotely executed command

问题描述

所以我正在使用 paramiko 进行一些基本的 SSH 测试，但我没有将任何输出输入到标准输出中.继承人我的代码.

so I was working with paramiko for some basic SSH testing and I'm not getting any output into stdout. Heres my code.

import paramiko
client=paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
com="ls ~/desktop"
client.connect('MyIPAddress',MyPortNumber, username='username', password='password')
output=""
stdin, stdout, stderr = client.exec_command(com)

print "ssh succuessful. Closing connection"
client.close()
print "Connection closed"
stdout=stdout.readlines()
print stdout
print com
for line in stdout:
    output=output+line
if output!="":
    print output
else:
    print "There was no output for this command"

因此，每当我运行此命令时，都会执行该命令(如执行 cp 之类的操作所看到的，文件会被复制)，但我总是得到此命令没有输出".当打印 stdout=stdout.readlines() 时， [] 是输出.此外，如果我在 for 循环中添加一个打印语句，它永远不会运行.有人可以帮我吗?谢谢！

So whenever I run this, the command is executed (as seen by if I do something like a cp, the file is copied), but I always get "There was no output for this command". When stdout=stdout.readlines() is printed, [] is the output. In addition, if I add a print statement into the for loop, it never gets run. Could someone help me out here? Thanks!

推荐答案

您在阅读行之前关闭了连接:

You have closed the connection before reading lines:

import paramiko
client=paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
com="ls ~/desktop"
client.connect('MyIPAddress',MyPortNumber, username='username', password='password')
output=""
stdin, stdout, stderr = client.exec_command(com)

print "ssh succuessful. Closing connection"
stdout=stdout.readlines()
client.close()
print "Connection closed"

print stdout
print com
for line in stdout:
    output=output+line
if output!="":
    print output
else:
    print "There was no output for this command"

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