在 Python Paramiko 中的 SSH 服务器上的辅助 shell/命令中执行(子)命令 [英] Execute (sub)commands in secondary shell/command on SSH server in Python Paramiko

问题描述

我在使用 ShoreTel 语音开关时遇到问题，我正在尝试使用 Paramiko 跳入其中并运行几个命令.我认为问题可能在于 ShoreTel CLI 给出的提示与标准 Linux $ 不同.它看起来像这样:

I'm having a problem with a ShoreTel voice switch, and I'm trying to use Paramiko to jump into it and run a couple commands. What I believe the problem might be, is that the ShoreTel CLI gives different prompts than the standard Linux $. It would look like this:

server1$:stcli
Mitel>gotoshell
CLI>  (This is where I need to enter 'hapi_debug=1')

Python 是否仍然期待 $，还是我错过了其他东西?

Is Python still expecting that $, or am I missing something else?

我认为这可能是一个时间问题，所以我将那些 time.sleep(1) 放在命令之间.似乎仍然没有采取.

I thought it might be a time thing, so I put those time.sleep(1) between commands. Still doesn't seem to be taking.

import paramiko
import time

keyfile = "****"
User = "***"
ip = "****"

command1 = "stcli"
command2 = "gotoshell"
command4 = "hapi_debug=1"

ssh = paramiko.SSHClient()
print('paramikoing...')
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

ssh.connect(hostname = ip, username = User, key_filename = keyfile)
print('giving er a go...')
ssh.invoke_shell()
stdin, stdout, stderr = ssh.exec_command(command1)
time.sleep(1)
stdin, stdout, stderr = ssh.exec_command(command2)
time.sleep(1)
stdin, stdout, stderr = ssh.exec_command(command4)
time.sleep(1)
print(stdout.read())

ssh.close()

print("complete")

我对成功执行此代码的期望是 hapi_debug 级别为 1.这意味着当我通过 SSH 进入该事物时，我会看到那些 HAPI 调试填充.当我这样做时，我看不到那些调试.

What I would expect from the successful execution of this code, would be for the hapi_debug level to be 1. Which means that when I SSH into the thing, I would see those HAPI debugs populating. When I do, I do not see those debugs.

推荐答案

我假设 gotoshell 和 hapi_debug=1 不是顶级命令，而是子命令stcli.换句话说，stcli 是一种外壳.

I assume that the gotoshell and hapi_debug=1 are not top-level commands, but subcommands of the stcli. In other words, the stcli is kind of a shell.

在这种情况下，您需要将要在子shell中执行的命令写入其stdin:

In that case, you need to write the commands that you want to execute in the subshell to its stdin:

stdin, stdout, stderr = ssh.exec_command('stcli')
stdin.write('gotoshell
')
stdin.write('hapi_debug=1
')
stdin.flush()

<小时>

如果你之后调用 stdout.read，它会一直等到命令 stcli 完成.它从不做什么.如果你想继续读取输出，你需要发送一个终止子shell的命令(通常是exit ).

---

If you call stdout.read afterwards, it will wait until the command stcli finishes. What it never does. If you wanted to keep reading the output, you need to send a command that terminates the subshell (typically exit ).

stdin.write('exit
')
stdin.flush()
print(stdout.read())

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