#!/bin/bash
if [ $# -ne 1 ]; then
  echo "USAGE: ./pubkey-check file"
fi
ssh-keygen -l -f $1 > /dev/null
if [ $? -ne 0 ]; then
  exit 2
fi
HEAD=$(head -1 $1)
if [[ $HEAD == *"PRIVATE KEY"* ]]; then
  exit 1
fi
exit 0