ssh test

import getpass
from argparse import ArgumentParser
from pathlib import Path
from paramiko.client import (
    SSHClient,
    MissingHostKeyPolicy,
)


def ask_password():
    return getpass.getpass('Please enter password: ')


def connect(
    hostname,
    username=None,
    password=None,
    pkey=None,
    passphrase=None,
    port=22,
    **kwargs,
    ):
    client = SSHClient()
    client.set_missing_host_key_policy(MissingHostKeyPolicy)
    client.load_system_host_keys()
    client.connect(
        hostname, port=port, username=username, password=password,
        pkey=pkey, passphrase=passphrase,
        )
    return client


def main(**kwargs):
    if not kwargs['key']:
        kwargs['password'] = ask_password()
    client = connect(**kwargs)
    # here the commands you want to execute
    stdin, stdout, stderr = client.exec_command('ls -l')
    # stdin, stdout, stderr are FileLike objects opened in bytes mode
    print(stdout.read().decode(), stderr.read().decode())
    client.close()


if __name__ == '__main__':
    parser = ArgumentParser()
    parser.add_argument('hostname', help='Hostname of the host you want to connect')
    parser.add_argument('username', type=str, help='User for login')
    parser.add_argument('--port', type=int, default=22, help='Port of SSH service')
    parser.add_argument('--key', action='store_true', help='Use only private key for login')
    args = parser.parse_args()
    main(**vars(args))