#!/bin/sh

AWK=gawk

while :; do 
	echo "CLEAR"
	vmstat -s | sed -e 's/^ *//';
	sleep 1 
done \
| $AWK '
/CLEAR/ { print "" }
{
	line = substr($0, (index($0, " ")+1))
	if (foo[line]) {
		printf("%10d %s\n", $1 - foo[line], line)
		fflush()
	}
	foo[line] = $1
}' | /usr/local/gnu/bin/grep --line-buffered -E "$@"