If and else statement with Expect

[kminev]

Hi,

I have a script which is logging in to network devices via ssh using expect programming.

My problem is that if I do

ssh host -l uname

It only works if y ssh_config is setup to use Protocol 1,2 and my network device I am trying to connect has ssh 1 but not 2. If the network device has ssh 2 but not 1 my script will stop there with an error.

Bottom line is I need to apply if and else structure after I try to ssh to see if ssh -1 was successful if not try ssh -2 if not go down hill


Here is my script:

#!/usr/local/bin/expect -f
spawn ssh myHost -l myUsername
expect "password:"
send "myPassword\r"
expect "#"
#send "show int status\r"
expect "#"
send "exit\r"

And this is how my script should look like with the proper syntax for expect

#!/usr/local/bin/expect -f
spawn ssh -1 myHost -l myUsername
if(not logged in){
   ssh -2 myHost -l myUname
}else{
echo "it failed\r"
}

expect "password:"
send "myPassword\r"
expect "#"
#send "show int status\r"
expect "#"
send "exit\r"

Thank you in advance.

[kminev]

I think I know how to do the if and else structure now I am having different problem.

#!/usr/local/bin/expect -f

spawn ssh -2 xxx.xx.xxx.xx -l root

expect
 {
        "password:"{
                send "myPw\r"
        }"*ssh_rsa_verify:*"{
                spawn ssh -1 xxx.xx.xxx.xx -l root
        }"password":{
                end "myPw\r"
        }eof{
                exit
        }
}


expect "#"
#send "show int status\r"
send "config t\r"
.
.
some more commands follow

For some reason after the spawn ssh ip is executed I can't read the result of this command act accordingly in my if and else structure....any ideas?

Thank you