python 操作 ssh详解编程语言

#coding:utf-8 
""" 
    ssh操作例子 实现了服务器日志下载 
    2012-08-24 
    yywolf 
""" 
import paramiko 
import time 
  
hostname="????" 
port=22 
username="app" 
password="????" 
if __name__=="__main__": 
#    paramiko.util.log.log_to_file('paramiko.log') 
    s = paramiko.SSHClient() 
    s.load_system_host_keys() 
    s.set_missing_host_key_policy(paramiko.AutoAddPolicy()) 
    s.connect(hostname,port,username,password,timeout=4) 
    stdin,stdout,stderr = s.exec_command("sh ~/log/check") 
    print stdout.read() 
    s.close() 
      
      
    #sftp 
    t = paramiko.Transport((hostname,port)) 
    t.connect(username=username,password=password) 
    sftp = paramiko.SFTPClient.from_transport(t) 
    files = sftp.listdir("/home/app/log/") 
    for f in files: 
        print f 
      
    filetime = time.strftime('%Y-%m-%d',time.localtime(time.time())) 
    #需要下载的文件 和下载后的文件名 
    sftp.get("/home/app/log/server.txt","C://Users//Administrator//Desktop//server.txt")     
    sftp.get("/home/app/log/"+filetime+".log.zip","C:/Users/Administrator/Desktop//"+filetime+".log.zip") 
      
    #RASkey 
    pkey_file = "E://yy//tools//key//rsa.txt" 
    key = paramiko.RSAKey.from_private_key_file(pkey_file) 
    s = paramiko.SSHClient() 
    s.load_system_host_keys() 
    s.set_missing_host_key_policy(paramiko.AutoAddPolicy()) 
    s.connect(hostname,port,username,pkey=key) 
    stdin, stdout, stderr = s.exec_command("ls -l /home/app/log") 
    print stdout.read() 
    s.close() 
  
    raw_input()