import paramiko
import argparse

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Execute ls on remote host')
    parser.add_argument('--host', dest='host', type=str, default=None, help='Remote host')
    parser.add_argument('--user', dest='user', type=str, default=None, help='Remote user')
    parser.add_argument('--passwd', dest='passwd', type=str, default=None, help='Remote pass')
    _args = parser.parse_args()

    ssh = paramiko.SSHClient()
    ssh.load_system_host_keys()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

    ssh.connect(_args.host, username=_args.user, password=_args.passwd, look_for_keys=False, allow_agent=False)

    transport = ssh.get_transport()
    channel = transport.open_session()
    channel.setblocking(1)
    command = "ls -a"
    stdin, stdout, stderr = ssh.exec_command(command)
    for line in stdout.readlines():
        print(line)