Python: SSH into Cisco device and run show commands

I have read over this post extensively and have researched Exscript, paramiko, Fabric and pxssh and I am still lost Persistent ssh session to Cisco router . I am new to python scripting.

I am attempting to write a script in Python that will SSH into a Cisco device, run "show version", display the results in notepad, then end the script.

I can get this working with show commands that do not require the user to interact with the device. For example:

from Exscript.util.interact import read_login
from Exscript.protocols import SSH2

account = read_login()              
conn = SSH2()                       
conn.connect('192.168.1.11')     
conn.login(account)                 

conn.execute('show ip route')
print conn.response

conn.send('exit\r')               
conn.close()                        

The above script will display the results of "show ip route".

If I try conn.execute('show version') the script times out because the Cisco device is expecting the user to press space bar to continue, press return to show the next line or any key to back out to the command line.

How can I execute the show version command, press space bar twice to display the entire output of the show version command, 开发者_开发问答then print it in python?

Thank you!!!!

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Try executing terminal length 0 before running show version. For example:

from Exscript.util.interact import read_login
from Exscript.protocols import SSH2

account = read_login()              
conn = SSH2()                       
conn.connect('192.168.1.11')     
conn.login(account)  

conn.execute('terminal length 0')           

conn.execute('show version')
print conn.response

conn.send('exit\r')               
conn.close()  

From the Cisco terminal docs: http://www.cisco.com/en/US/docs/ios/12_1/configfun/command/reference/frd1003.html#wp1019281

---

First execute

terminal length 0

to disable paging.

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I just asked the same thing and the below code will run from a list and obtain the information you are asking for.

from __future__ import print_function
from netmiko import ConnectHandler
import sys
import time
import select
import paramiko
import re
fd = open(r'C:\NewdayTest.txt','w') # Where you want the file to save to.
old_stdout = sys.stdout   
sys.stdout = fd 
platform = 'cisco_ios'
username = 'username' # edit to reflect
password = 'password' # edit to reflect

ip_add_file = open(r'C:\IPAddressList.txt','r') # a simple list of IP addresses you want to connect to each one on a new line

for host in ip_add_file:
    host = host.strip()
    device = ConnectHandler(device_type=platform, ip=host, username=username, password=password)
    output = device.send_command('terminal length 0')
    output = device.send_command('enable') #Editable to be what ever is needed
    print('##############################################################\n')
    print('...................CISCO COMMAND SHOW RUN OUTPUT......................\n')
    output = device.send_command('sh run')
    print(output)
    print('##############################################################\n')
    print('...................CISCO COMMAND SHOW IP INT BR OUTPUT......................\n')
    output = device.send_command('sh ip int br')
    print(output) 
    print('##############################################################\n')

fd.close()