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，并且尝试使用Paramiko跳入并运行几个命令.我认为问题可能是，ShoreTel CLI给出的提示与标准Linux $不同.看起来像这样:

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

Python是否仍然希望使用$，还是我还缺少其他内容?

我认为这可能是一件时事，所以我将那些time.sleep(1)放在了命令之间.似乎仍然没有服用.

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")

成功执行此代码后，我期望hapi_debug级别为1.这意味着当我通过SSH进入东西时，我会看到那些HAPI调试正在填充.当我这样做时，看不到那些调试信息.

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

在这种情况下，您需要将要在子Shell中执行的命令写入其stdin:

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

---

如果随后调用stdout.read，它将等待直到命令stcli完成.它永远不会做.如果要继续读取输出，则需要发送一个终止子外壳程序的命令(通常为exit\n).

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

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')

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

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")

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.

解决方案

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.

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\n')
stdin.write('hapi_debug=1\n')
stdin.flush()

---

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\n).

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

这篇关于在Python Paramiko中的SSH服务器上的辅助Shell/命令中执行(子)命令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！