Month: April 2019

I needed a quick and dirty script to check if I had an account and valid password on a list of servers. Instead of manually logging on to each server to confirm my access, I created a Python script using Paramiko. The script reads in a text file with a list of servers and then logs on to each server and tests if I am able to successfully log on with my user account. In order for the script to execute successfully, you need to have Parmiko installed in addition to python.

Script:

import sys
import time
import paramiko
import getpass
 
my_id = 'johnsmith'
my_password = getpass.getpass('Password:')
 
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 
out_file = open('connection_results.txt','w')
in_file = open('list_of_servers.txt', 'r') 
for host in in_file: 
      host=host.strip()
      print ("Checking server",host)
      
      try:
            ssh.connect(host, username=my_id, password=my_password)
            terminal = ssh.invoke_shell()
            terminal.send('junk')
            terminal.send('\n')
            time.sleep(5)
            print (terminal.recv(9999).decode('utf-8'))
      
            command = 'hostname'
            (stdin, stdout, stderr) = ssh.exec_command(command)
            for line in stdout.readlines():
                  print ("Connected to",line)
                  out_file.write("connected to " + line + "\n")
    
            terminal.send('exit')
            terminal.send('\n')
            time.sleep(5)
      
            ssh.close()
 
      except:
            out_file.write("Could not connect to " + host + "\n")
            
 
in_file.close()
out_file.close()