#!/usr/bin/env python
import paramiko
hostname='172.28.102.249'
username='root'
password='toor'
if __name__=='__main__':
 paramiko.util.log_to_file('paramiko.log')
 s=paramiko.SSHClient()
 s.load_system_host_keys()
 s.connect(hostname=hostname,username=username,password=password)
 stdin,stdout,stderr=s.exec_command('ifconfig;free;df')
 #這里我輸了了多個命令，可以試驗下
 print stdout.read()
 s.close()