批量执行命令

#-*- coding: utf-8 -*-#!/usr/bin/python import paramikoimport threadingdef ssh2(ip,username,passwd,cmd):    try:        ssh = paramiko.SSHClient()        ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())        ssh.connect(ip,22,username,passwd,timeout=5)        for m in cmd:            stdin, stdout, stderr = ssh.exec_command(m)#           stdin.write("Y")   #简单交互，输入 ‘Y’             out = stdout.readlines()            #屏幕输出            for o in out:                print o,        print '%s\tOK\n'%(ip)        ssh.close()    except :        print '%s\tError\n'%(ip)if __name__=='__main__':    cmd = ['cal','echo hello!']#你要执行的命令列表    username = ""  #用户名    passwd = ""    #密码    threads = []   #多线程    print "Begin......"    for i in range(1,254):        ip = '192.168.1.'+str(i)         a=threading.Thread(target=ssh2,args=(ip,username,passwd,cmd))        a.start()