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expectprompt

User input for Expect script

I am new to scripting. How can I write an Expect script to ssh into a device and prompt the user for password? We use a pin + RSA token code as the password so I can't store the password.

#!/usr/bin/expect -f

spawn ssh device1
Solution

  • I have used this code before to achieve what you wish to achieve. You can take it as a reference point to write your own version of the code. 

    #!/usr/bin/env expect -f
set passw [lindex $argv 0]

#timeout is a predefined variable in expect which by default is set to 10 sec
set timeout 60 
spawn ssh $user@machine
while {1} {
  expect {

    eof                          {break}
    "The authenticity of host"   {send "yes\r"}
    "password:"                  {send "$password\r"}
    "*\]"                        {send "exit\r"}
  }
}
wait
#spawn_id is another default variable in expect. 
#It is good practice to close spawn_id handle created by spawn command
close $spawn_id

    Source: Expect Wiki