Python Paramiko 执行命令后如何保存结果?
问题描述:
如下所示,是否可以保存结果?因为,在第二个和第三个 stdout.read() 我无法达到结果.
As you see below, is it possible to save the result? Cause, at second and third stdout.read() I couldn't reach the result.
import paramiko
import os
dssh = paramiko.SSHClient()
dssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
dssh.connect('192.168.1.250', username='root', password='pass')
import os
stdin, stdout, stderr = dssh.exec_command('ifconfig')
print stdout.read()
print ('Sleeping 2 seconds!')
os.system('sleep 2')
stdin, stdout, stderr = dssh.exec_command('ls -l')
print stdout.read()
print stdout.read()
print stdout.read()
dssh.close()
答
想象一下 stdout
是一个普通文件.如果您第二次调用 file.read()
,您希望得到什么?-- 没有(空字符串),除非文件在外面发生了变化.
Imagine that stdout
is an ordinary file. What do you expect to get if you call file.read()
the second time? -- nothing (empty string) unless the file has changed outside.
保存字符串:
output = stdout.read()
您可能会发现 Fabric 使用起来更简单(它使用 paramiko
在后台执行命令).
You might find Fabric simpler to use (it uses paramiko
to execute commands under the hood).