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I’m trying to automate ssh connection. In this session i want to send some commands to log on into another subproces.

import paramiko
import os
import time 


ip = 'a'
port = 22
username = 'b' 
password = 'c'

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(ip,port,username,password)

channel = ssh.invoke_shell()

out = channel.recv(9999)

channel.send('net-client\n')
channel.send('connect\n')
channel.send('yes\n')
channel.send('password\n')
channel.send('help\n')

while not channel.recv_ready():
    time.sleep(3)

out = channel.recv(9999)
print(out.decode("ascii"))

Manual preparation:

  • $(prompt from ssh connection)]
  • $ net-client (when i write this command, it open client installed on machine)
  • & connect (I have another prompt because i'm in subprocces, I write 'connect')
  • Are you sure you want to continue connecting (yes/no)? yes (write 'yes) Interactive SSH Authentication Type your password:
  • Password: 'password' (i write password)
  • & (now i'm connected in subproces)

Actual result: I have correct answer after "net-client' but when I write next command (in this case 'connect'), this will be written on ssh-connection not i subproces...

I want to continue send commands in this subproces( so put command like connect, password etc.) but my script can't handle this operation.

This my actual print from script:

$
net-client
"Correct answer to the command"
& connect
yes
password

help
Rafał Szumski
  • 41
  • 4

1 Answers1

0

Finally I found my answer.

The solution is simple: whitespace '\n' just move to new line. In output I see command that I've send but it was missing "press Enter". Need to change this for '\r' - carriage return, then all of command are 'accepted' by process.

Rafał Szumski
  • 41
  • 4