[Install an SSH Key in EdgeOS via SSH] Non-interactive Installation of SSH key on an EdgeOS Device #edgemax #edgerouter #edgeos #expect #ubiquiti

install_ssh_key_on_edgeos_via_ssh.exp

#!/usr/bin/env expect
# USAGE: ./install_ssh_key_on_edgeos_via_ssh.exp 192.168.1.1 ubnt ubnt #EdgeOS Defaults
# WARNING: This script will delete any existing keys on local and remote hosts for the specified user

set timeout 8

set host [lindex $argv 0]
set user [lindex $argv 1]
set password [lindex $argv 2]

spawn bash -c "rm ~/.ssh/$user@$host ~/.ssh/$user@$host.pub"
sleep 1

spawn bash -c "ssh-keygen -t rsa -b 4096 -f ~/.ssh/$user@$host -N \"\""
expect "randomart"
sleep 1

spawn bash -c "scp -o StrictHostKeyChecking=no ~/.ssh/$user@$host.pub $user@$host:/home/$user/.ssh"
expect "assword"
send "$password\r"
expect "100%" {
  sleep 1
  send "$password\r"
  exp_continue
}

spawn bash -c "ssh -o StrictHostKeyChecking=no $user@$host"
expect "assword"
send "$password\r"
expect ":~$" {
  sleep 1
  send "$password\r"
  exp_continue
}
send "configure\r"
expect "#"
send "delete system login user ubnt authentication public-keys\r"
expect "#"
send "commit\r"
expect "#"
send "loadkey $user /home/$user/.ssh/$user@$host.pub\r"
expect "#"
send "exit\r"
expect ":~$"
send "exit\r"

exit 0