#!/bin/sh
#
# print list of machines for which (1) name contains "pattern"
#   and (2) ruptime reports an "up" status
#
# usage:
#   upmachines pattern
#
if [ -z "$1" ]
then
	echo Usage:  $(basename $0) pattern
	exit 1
fi
ruptime | grep -i "$1" | grep -v down | awk '{ print $1 }'