ssh expect script doesn't recognize connect string

Question

I tried my hand at an expect script that's supposed to copy an ssh public key up to a remote server and copy it into place so that you'll be able to ssh into it wihout having to enter in a password next time.

I'm trying to allow for a host connecting for the first time to expect the complaint about an unrecognized host key:

#!/usr/bin/expect -f
set PUB "~/.ssh/id_rsa.pub"
spawn scp $PUB [email protected]:
expect {
 "(Are you sure you want to continue connecting yes/no)?" { send "yes\r"; exp_continue }
  password:                                                {send secret!\r; exp_continue}
  }
expect "password: "
send "secret!\r"

This is what happens when I actually run the script:

#./bin/ssh-login.ssh
spawn scp ~/.ssh/id_rsa.pub [email protected]:
spawn ssh [email protected] /bin/mkdir .ssh && /bin/chmod 700 .ssh && /bin/cat id_rsa.pub >> .ssh/authorized_keys && /bin/chmod 600 .ssh/authorized_keys
The authenticity of host '100.114.116.106 (100.114.116.106)' can't be established.
RSA key fingerprint is 3b:04:73:25:24:f3:aa:99:75:a7:98:62:5d:dd:1b:38.
Are you sure you want to continue connecting (yes/no)? secret!
Please type 'yes' or 'no':

Basically the problem is that the line I'm trying to setup to expect the "Are you sure you want to continue connecting yes/no" string is not being recognized by the script.

Any suggestions on how I can improve that so that those lines match?

Thanks

IBam · Accepted Answer · 2015-10-08 01:32:56Z

1

You have a typo in your script - the opening bracket on the "Are you sure..." line should be before the "yes/no", not at the start. The fixed version:

#!/usr/bin/expect -f
set PUB "~/.ssh/id_rsa.pub"
spawn scp $PUB [email protected]:
expect {
 "Are you sure you want to continue connecting (yes/no)?" { send "yes\r"; exp_continue }
  password:                                                {send secret!\r; exp_continue}
  }
expect "password: "
send "secret!\r"

...works fine for me

answered Oct 8, 2015 at 1:32

IBam

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