74.expect

分发系统-expect

yum install -y expect

• 自动远程登录

vim 1.expect

#! /usr/bin/expect
set host "192.168.133.132"  //变量设置，类似shell的 host=xx
set passwd "123456"
spawn ssh root@$host
expect {
"yes/no" { send "yes\r"; exp_continue}  
"password:" { send "$passwd\r" }   //返回值匹配到yes/no时，输入yes并回车，返回值匹配到passwd时输入密码并回车
}
interact   //interact退出expect，留在远程主机；什么也不写会退出expect，并退出远程主机；expect eof 延迟几秒后退出expect脚本并退出远程主机

chomod a+x 1.expect
./1.expect  //执行1.expect脚本

• 自动远程登录后，执行命令并退出

#!/usr/bin/expect
set user "root"
set passwd "123456"
spawn ssh [email protected]
expect {
"yes/no" { send "yes\r"; exp_continue}
"password:" { send "$passwd\r" }
}
expect "]*"  //返回值匹配到"]*" ，则执行下面命令
send "touch /tmp/12.txt\r"
expect "]*"
send "echo 1212 > /tmp/12.txt\r"
expect "]*"
send "exit\r"  //退出终端，（退出expect，并退出远程主机）

• 传递参数（$argv 0 第一个参数，依次类推）

#!/usr/bin/expect
set user [lindex $argv 0]
set host [lindex $argv 1]
set passwd "123456"
set cm [lindex $argv 2]
spawn ssh $user@$host
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]*"
send "$cm\r"
expect "]*"
send "exit\r"

./3.expect  root  192.168.127.134  "w;top;"