import pexpect
ipAddress = 'develperWorks.ibm.com'
loginName = 'root'
loginPassword = 'passw0rd'

cmd = 'ftp ' + ipAddress

child = pexpect.spawn(cmd)

index = child.expect(["(?i)name", "(?i)Unknown host", pexpect.EOF, pexpect.TIMEOUT])
if ( index == 0 ):
    child.sendline(loginName)
    index = child.expect(["(?i)password", pexpect.EOF, pexpect.TIMEOUT])
    if (index != 0):
        print "ftp login failed"
        child.close(force=True)
    child.sendline(loginPassword)
    index = child.expect( ['ftp>', 'Login incorrect', 'Service not available',
    pexpect.EOF, pexpect.TIMEOUT])

    if (index == 0):
        print 'Congratulations! ftp login correct!'
        # 发送 'bin'+ 换行符给子程序，表示接下来使用二进制模式来传输文件.
        child.sendline("bin")
        print 'getting a file...'
        # 向子程序发送下载文件 rmall 的命令.
        child.sendline("get rmall")
        # 期望下载成功后，出现 'Transfer complete.*ftp>'，其实下载成功后,
        # 会出现以下类似于以下的提示信息:
        #    200 PORT command successful.
        #    150 Opening data connection for rmall (548 bytes).
        #    226 Transfer complete.
        #    548 bytes received in 0.00019 seconds (2.8e+03 Kbytes/s)
        # 所以直接用正则表达式 '.*' 将 'Transfer complete' 和提示符 'ftp>' 之间的字符全省去.
        index = child.expect( ['Transfer complete.*ftp>', pexpect.EOF, pexpect.TIMEOUT] )
        # 匹配到了 pexpect.EOF 或 pexpect.TIMEOUT，表示超时或者 EOF，程序打印提示信息并退出.
        if (index != 0):
            print "failed to get the file"
            child.close(force=True)
        # 匹配到了 'Transfer complete.*ftp>'，表明下载文件成功，打印成功信息，并输入 'bye'，结束 ftp session.
        print 'successfully received the file'
        child.sendline("bye")
    # 用户名或密码不对，会先出现 'Login incorrect'，然后仍会出现 'ftp>'，但是 pexpect 是最小匹配，不是贪婪匹配,
    # 所以如果用户名或密码不对，会匹配到 'Login incorrect'，而不是 'ftp>'，然后程序打印提示信息并退出.
    elif (index == 1):
        print "You entered an invalid login name or password. Program quits!"
        child.close(force=True)
    # 匹配到了 'Service not available'，一般表明 421 Service not available, remote server has
    # closed connection，程序打印提示信息并退出.
    # 匹配到了 pexpect.EOF 或 pexpect.TIMEOUT，表示超时或者 EOF，程序打印提示信息并退出.
    else:
        print "ftp login failed! index = " + index
        child.close(force=True)
# 匹配到了 "(?i)Unknown host"，表示 server 地址不对，程序打印提示信息并退出
elif index == 1 :
    print "ftp login failed, due to unknown host"
    child.close(force=True)
# 匹配到了 pexpect.EOF 或 pexpect.TIMEOUT，表示超时或者 EOF，程序打印提示信息并退出
else:
    print "ftp login failed, due to TIMEOUT or EOF"
    child.close(force=True)

import pexpect
p = pexpect.spawn( ‘ ls -l ’ )
fout = open ('log.txt', "w")
p.logfile = fout
p.expect(pexpect.EOF)
fout.close()

import pexpect
import getpass, os

def ssh_command (user, host, password, command):
    ssh_newkey = 'Are you sure you want to continue connecting'
    # 为 ssh 命令生成一个 spawn 类的子程序对象.
    child = pexpect.spawn('ssh -l %s %s %s'%(user, host, command))
    i = child.expect([pexpect.TIMEOUT, ssh_newkey, 'password: '])
    if i == 0: # Timeout
        print 'ERROR!'
        print 'SSH could not login. Here is what SSH said:'
        print child.before, child.after
        return None
    # 如果 ssh 没有 public key，接受它.
    if i == 1: # SSH does not have the public key. Just accept it.
        child.sendline ('yes')
        child.expect ('password: ')
        i = child.expect([pexpect.TIMEOUT, 'password: '])
        if i == 0: # Timeout
        print 'ERROR!'
        print 'SSH could not login. Here is what SSH said:'
        print child.before, child.after
        return None
    # 输入密码.
    child.sendline(password)
    return child

def main ():
    host = raw_input('Hostname: ')
    user = raw_input('User: ')
    #getpass.getpass() 来获得用户输入的密码，与 raw_input 不同的是，getpass.getpass() 不会将用户输入的密码字符串 echo 回显到 stdout 上。
    password = getpass.getpass()
    command = raw_input('Enter the command: ')
    child = ssh_command (user, host, password, command)
    # 匹配 pexpect.EOF
    child.expect(pexpect.EOF)
    print child.before

if __name__ == '__main__':
    try:
        main()
    except Exception, e:
        print str(e)
        traceback.print_exc()
        os._exit(1)

ip_array=("192.168.1.1" "192.168.1.2" "192.168.1.3")
user="paas"
remote_cmd="/home/test/1.sh"

#本地通过ssh执行远程服务器的脚本
for ip in ${ip_array[*]}
do
	if [ $ip = "192.168.1.1" ]; then
		port="7777"
	else
		port="22"
	fi
	ssh -t -p $port $user@$ip "remote_cmd"
done

import sys
import pexpect

password = 'password'
expect_list = ['(yes/no)', 'password:']

p = pexpect.spawn('ssh username@localhost ls')
try:
    while True:
        idx = p.expect(expect_list)
        print p.before + expect_list[idx],
        if idx == 0:
            print "yes"
            p.sendline('yes')
        elif idx == 1:
            print password
            p.sendline(password)
except pexpect.TIMEOUT:
    print >>sys.stderr, 'timeout'
except pexpect.EOF:
    print p.before
    print >>sys.stderr, '<the end>'

import paramiko
def ssh2(ip='162.3.210.32',username='root',passwd='huawei',commands=[]):
    client = paramiko.SSHClient()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    client.connect(ip, 22, username, password=passwd, timeout=4)
    for cmd in commands:
        print cmd
        stdin, stdout, stderr = client.exec_command(cmd)
        for std in stdout.readlines():
          print std,
    print "%s\tOK\n"%ip
    client.close()