我希望Expect脚本提示输入密码吗？

Question

我的期望脚本旨在在联系9k上执行一些“显示”命令。我已经在我的期望脚本中定义了密码，并且我担心明文密码。我想在执行脚本时提示用户输入密码。

请参见下面的我的期望脚本：

#!/usr/bin/expect

#Defining the variables!

set timeout 300 
set USERNAME "User" 
set hostip [lindex $argv 0] 
set password "cisco"

log_user 1
#log_file -a session_$hostip.log
#send_log "### /START-SSH-SESSION/ IP: $hostip @ [exec date] ###\r"

spawn ssh -q -o StrictHostKeyChecking=no  $USERNAME@$hostip

expect "Password:" 
send "$password\r" 
expect "*?#*" 
send "terminal length 0\r" 
expect "*?#*" 
send "show version\r" 
expect "*?#*" 
send "show module\r" 
expect "*?#*" 
send "show ip interface brief\r" 
expect "*?#*" 
send "show interface status\r" 
expect "*?#*" 
send "show interface description\r" 
expect "*?#*" 
send "show inventory\r" 
expect "*?#*"
send  "exit\r"

#send_log "\r### /END-SSH-SESSION/ IP: $hostip @ [exec date] ###\r"

puts "\r\r"