expect远程自动登录

expect远程自动登录

用法1、远程自动登录脚本，服务端须要安装expect和openssh-clients

[root@localhost ~]# cat login.expect

#! /usr/bin/expect

set host "192.168.1.2"

set passwd "12345678"

spawn ssh root@$host

expect {

"yes/no" { send "yes\r"; exp_continue}

"assword:" { send "$passwd\r" }

}

interact

用法2、登录后执行命令而后退出

[root@localhost ~]# cat 11.expect

#!/usr/bin/expect

set user "root"

set host "192.168.1.2"

set passwd "12345678"

spawn ssh $user@$host

expect {

"yes/no" { send "yes\r"; exp_continue}

"password:" { send "$passwd\r" }

}

expect "]*"

send "touch /tmp/12.txt\r"

expect "]*"

send "echo 1212 > /tmp/12.txt\r"

expect "]*"

send "exit\r"

用法3、expect传递参数

[root@localhost ~]# cat 11.expect

#!/usr/bin/expect

# 第一个参数为用户名

set user [lindex $argv 0]

# 第二个参数为IP

set host [lindex $argv 1]

# 第三个参数为密码

set passwd [lindex $argv 2]

# 第四个参数为执行的命令

set cm [lindex $argv 3]

# ssh远程登录

spawn ssh $user@$host

# expect模块自动执行

expect {

"yes/no" { send "yes\r"}

"password:" { send "$passwd\r" }

}

expect "]*"

send "$cm\r"

expect "]*"

send "exit\r"

[root@localhost ~]## 运行方式，执行脚本的时候须要在后面指定4个参数，每一个参数之间用空格分开

[root@localhost ~]# ./11.expect root 192.168.1.2 12345678 "cat /etc/passwd > /tmp/111.txt"

用法4、同步文件，服务端和客户端都要安装rsync

[root@localhost ~]# cat 11.expect

#!/usr/bin/expect

set passwd "111111"

set file "/tmp/11.txt"

spawn rsync -av $file root@192.168.10.29:$file

expect {

"yes/no" { send "yes\r"}

"password:" { send "$passwd\r" }

}

expect eof

用法5、指定IP列表

[root@localhost ~]# cat 1.expect

#!/usr/bin/expect

set host [lindex $argv 0]

set passwd "111111"

spawn ssh root@$host

expect {

"yes/no" { send "yes\r"; exp_continue}

"assword:" { send "$passwd\r" }

}

interact

[root@localhost ~]# cat 1.sh

#!/bin/bash

for ip in `cat ip.txt`

do

./1.expect $ip

done

[root@localhost ~]# cat ip.txt

192.168.1.2

192.168.1.3

用法6、指定IP列表，文件列表

[root@localhost ~]# vi 1.expect

#!/usr/bin/expect

set host [lindex $argv 0]

set file [lindex $argv 1]

set passwd "111111"

spawn rsync -av $file root@$host:$file

expect {

"yes/no" { send "yes\r"}

"password:" { send "$passwd\r" }

}

expect eof

[root@localhost ~]# vi 1.sh

#!/bin/bash

for ip in `cat ip.txt`

do

for file in `cat file.txt`

do

./1.expect $ip $file

done

done

[root@localhost ~]# cat file.txt

/tmp/1.txt

/tmp/2.txt

[root@localhost ~]# cat ip.txt

192.168.1.2

192.168.1.3