#!/bin/sh -e

# I hereby place this script in the public domain -- Colin Percival

# Usage
if [ $# -lt 1 ]; then
	echo "usage: ec2-get-console-output INSTANCE | $0 hostname" >/dev/stderr
	exit 1;
fi

# Extract fingerprints and pass them to ssh-knownhost
tr -d '\r' |
    grep ^ec2: |
    awk '/BEGIN SSH HOST KEY FINGERPRINTS/, /END SSH HOST KEY FINGERPRINTS/' |
    grep -v 'HOST KEY FINGERPRINTS' |
    cut -f 3 -d ' ' |
    xargs ssh-knownhost $1