Python script - connect to SSH and run command

Use paramiko or the libssh2 python bindings.

now the popular solution is Fabric

If you're actually looking for a module that lets you automate CLI interaction, there's pexpect

There are many libraries to do that.

1. Subprocess
2. Pexpect
3. Paramiko (Mostly used)
4. Fabric
5. Exscript

You can check their documentation for the implementation.

I will refer you to:

• spur

import spur

shell = spur.SshShell(hostname="localhost", username="bob", password="password1", missing_host_key=spur.ssh.MissingHostKey.accept)
result = shell.run(["echo", "-n", "hello"])
print(result.output) # prints hello

• paramiko
  • Login Through SSH Execute Command - video

import paramiko

hostname = 'enter_host'
username = 'enter_user'
password = 'enter_pass'

client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(hostname, username=username, password=password)

stdin, stdout, stderr = client.exec_command('cd /enter/valid/path && ls -l')

for line in stdout:
    print(line.strip('\n'))

client.close()

output:

-rw-rw-r-- 1 username username 2712 Jan 22 14:49 file_1.ini
-rw-rw-r-- 1 username username 5928 Jan 22 14:50 file_2.log
-rw-rw-r-- 1 username username 1454 Jan 14 23:31 file_3.sql
-rw-rw-r-- 1 username username  337 Jan 14 23:31 file_4.py
drwxrwxr-x 3 username username 4096 Jan 14 23:33 folder_1
drwxrwxr-x 2 username username 4096 Jan 14 23:33 folder_2
-rw-rw-r-- 1 username username 2566 Jan 21 12:38 file_5.md
-rw-rw-r-- 1 username username   63 Jan 14 23:31 file_6.txt
drwxrwxr-x 4 username username 4096 Jan 14 23:31 folder_3
drwxrwxr-x 9 username username 4096 Jan 21 12:38 folder_4

• No libraries required

import subprocess

subprocess.Popen("ssh {user}@{host} {cmd}".format(user=user, host=host, cmd='ls -l'), shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()

You can use the vassal package, which is exactly designed for this.

All you need is to install vassal and do

from vassal.terminal import Terminal
shell = Terminal(["ssh username@host", "cd scripts", "python foo1.py", "python foo2.py"])
shell.run()

This will run the command once every second, and you can make it run faster to change sec=0.1.