我正在研究一个运行Cisco IOS的远程设备的脚本(python 2.7),所以我需要通过ssh执行很多命令。 很少有命令没有输出,有些命令没有输出,我想要接收输出。 它是这样的:
import paramiko ssh=paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect(self._ip, port=22, username=username, password=password stdin, stdout, stderr = ssh.exec_command('command with no output') stdin, stdout, stderr = ssh.exec_command('command with no output') stdin, stdout, stderr = ssh.exec_command('command with output') sh_ver = stdout.readlines()事情是exec_command是导致通道关闭,它不能被重用,但我不可能打开一个新的通道,以执行另一个命令,因为这是一个命令会话,最终我需要得到输出。
我试图以这种方式执行命令:
stdin, stdout, stderr = ssh.exec_command(''' command command command ''') output = stdout.readlines()但是这样, output是空的。 即使它不会,我需要对output执行一些检查,然后继续停止的会话。
那么我需要什么? 一种管理此ssh连接而不关闭或启动新连接并轻松接收命令输出的方法。
在此先感谢,美里。 :)
I'm working on a script (python 2.7) that is wotking with a remote device running Cisco IOS, so I need to execute a lot of commands through ssh. Few commands have no output and some of them have, and I want to recieve the output. It goes something like this:
import paramiko ssh=paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect(self._ip, port=22, username=username, password=password stdin, stdout, stderr = ssh.exec_command('command with no output') stdin, stdout, stderr = ssh.exec_command('command with no output') stdin, stdout, stderr = ssh.exec_command('command with output') sh_ver = stdout.readlines()The thing is exec_command is causes the channel to close and it can’t be reused, but it's not possible for me to open a new channel in order to execute another command, because this is a session of commands that in the end I need to get the output.
I've tried to execute the commands this way as well:
stdin, stdout, stderr = ssh.exec_command(''' command command command ''') output = stdout.readlines()but this way, output is empty. And even if it would'nt, I need to perform a few checks on the output and then continue the session where I stopped.
So what do I need? A way to manage this ssh connection without closing it or starting a new one, and to easily recieve the output from the command.
Thanks in advance, Miri. :)
最满意答案
我认为你需要的是invoke_shell() 。 例如:
ssh = paramiko.SSHClient() ... ... chan = ssh.invoke_shell() # starts an interactive session chan.send('command 1\r') output = chan.recv() chan.send('command 2\r') output = chan.recv() ... ...该Channel有许多其他方法。 您可以参考该文件以了解更多详情。
I think what you need is invoke_shell(). For example:
ssh = paramiko.SSHClient() ... ... chan = ssh.invoke_shell() # starts an interactive session chan.send('command 1\r') output = chan.recv() chan.send('command 2\r') output = chan.recv() ... ...The Channel has many other methods. You can refer to the document for more details.
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