profile=$1

if [ $profile ]; then # We got a profile pattern, look for a match
  match=$(grep -E "\[profile .*$profile.*" ~/.aws/config | sed -E 's/\[profile (.+)\]/\1/') # Array of matching profiles
  match_no=$(echo $match|wc -l) # Number of profile matching

  if [ $match_no -gt 1 ]; then # more than one match
    echo "Multiple profile match:"
    echo $match
    return
  fi

  if [ $match ]; then # Single match, setting profile
    echo "Activating profile $match"
    export AWS_DEFAULT_PROFILE=$match
    export AWS_PROFILE=$match
    export AWS_EB_PROFILE=$match
    return
  else
    echo "No match for $profile"
    return
  fi

elif [ $AWS_PROFILE ]; then # no profile passed, clean up current one, logout
  unset AWS_DEFAULT_PROFILE AWS_PROFILE AWS_EB_PROFILE
  echo profile cleared.
  return
fi

echo "Available profiles"
grep profile ~/.aws/config | sed -E 's/\[profile (.+)\]/\1/'
# vim: set ts=2 sw=2 tw=0 ft=sh :