管理机上需要安装expect包

yum -y install expect

1.定义主机ip

[root@localhost ~]# cat ip.txt

192.168.1.12

192.168.1.13

2.定义脚本内容

[root@localhost ~]# cat script.sh

vmstat

3、shell嵌套expect脚本

[root@localhost ~]# cat command.sh

#!/bin/bash

passwd='12345678'

sc=$(cat script.sh)

cat ip.txt | while read line

do

/usr/bin/expect <<EOF

set timeout 30

spawn ssh root@$line

expect {

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

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

}

expect "]# "

send "$sc\r"

send "exit\r"

expect eof

EOF

#首先定义密码为passwd变量，把发送的命令定义为sc变量，然后用循环读ip地址定义为line变量。

done

exit 0