TCL/Expect:: How to automate the router boot loader function [duplicate]

问题

This Question is the continuation of My old question "TCL/Expect:: How to automate the router booting scenario?". Since I am not getting any response for that I am creating a new question.

My requirement : I want to automate router boot prompt scenario. That involves following steps:

Login into a router
Give reload
Press Esp kep from keyboard continuously (You will get boot prompt by this)

Is there any way to automate this inbetween process (reload... to ... boot prompt)

I tried to use "plink.exe" as suggested by donal in my previous question. But when router reloads plink is also coming out.

Please suggest me any tool to automate this.

回答1:

You can use send and expect to do this with code given below.

set username "admin"
set password "lab"
set router_ip 10.189.11.27

spawn telnet $router_ip
puts "Telnet to router device"

expect "Login"
send "$username\r"
expect "Password"
send "$password\r"
#Assuming the router will come up a prompt as 'Router>' 
#and I am expecting for character '>'
expect ">"
send "enable\r"
expect "#"
#Sending reload command here
send "reload\r"
#Assuming it will prompt the user for confirmation. 
#If your router won't prompt before reload, you can remove this
expect "confirm"
#Sending 'Enter' key to confirm
send "\r"
#Waiting for the portion of text to come when we have to give
#Esc key from keyboard
expect {
        #Appearance of some text after which you prefer send Esc key
        "your ideal string here" {puts "Going to send Esc key now"}
        timeout {puts "I am still waiting to press the Esc key"}
    }

#I hope by saying escape key you meant the 'Esc' key. 
#In some routers, to get boot prompt, you have to press 'Ctrl+C'

#This will send 'Escape' key from keyboard.
send "\x1b\r"
#Assuming your boot prompt is 'boot>'
expect "boot>"

#Whatever configuration you want to change here, do it

#This will send 'Ctrl+]' to close the telnet connection gracefully
send "\x1d"
expect "telnet>"
send "quit\r"
expect "Connection"

After giving reload command, to get to the router's boot prompt, you are pressing the Esc Key and I believe you will prefer to wait for some random text which will appear on the reboot logs of router.

That text has to be added in the code segment

expect {
            #Appearance of some text after which you prefer send Esc key
            "your ideal string here" {puts "Going to send Esc key now"}
            timeout {puts "I am still waiting to press the Esc key"}
        }

Make sure, you are replacing the "your ideal string here" with your preferable text.

You can refer the following links for the ASCII characters of printable and non-printable characters.

ASCII Table

ASCII Non-Printable

来源：https://stackoverflow.com/questions/24436915/tcl-expect-how-to-automate-the-router-boot-loader-function

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