expect 批量执行命令

在跳板机上执行脚本，登录到远程机器分区格式化挂载命令

#!/bin/bash
passwd='engine'
/usr/bin/expect <<-EOF
set time 40
spawn ssh root@172.18.3.114
expect {
"*yes/no" { send "yes "; exp_continue }
"*password:" { send "$passwd " }
}
expect "*#"
send "fdisk /dev/vda "
expect -exact "Command (m for help):"
send -- "n "
expect -exact "Select (default p):"
send -- "p "
expect -exact "Partition number (1-4, default 1):"
send -- "1 "
expect -exact "First sector"
send -- "2048 "
expect -exact "Last sector, +sectors or +size{K,M,G}"
send -- "1048575999 "
expect -exact "Command (m for help):"
send -- "w "
expect "*#"
send "echo '/dev/vda1 /home ext4 defaults 0 0' >>/etc/fstab "
expect "*#"
send -- "mkfs.ext4 /dev/vda1 "
expect "*#"
send -- "mount -a "
interact
expect eof
EOF