#!/bin/bash

if [ "$(id -u)" -ne 0 ]; then
    echo "Must be root"
    exit 1
fi

set -eu

if [ -f /root/.ssh/id_rsa.pub ]; then
    echo "SSH public key already exists. Exiting!"
    exit 1
fi

if [ -f /root/.ssh/config ]; then
    echo "SSH config already exists. Exiting!"
    exit 1
fi

umask 0077

echo ">>> ssh-keygen"
ssh-keygen

cat /root/.ssh/id_rsa.pub

echo ">>> creating .ssh/config"
cat > /root/.ssh/config <<EOF
Host *
    HashKnownHosts no

Host backuphost
    User borg
    Hostname backup.example.com
EOF