#!/bin/sh

last=`scan last | columns 1 | tr -cd '[0-9]'`
inc=100
{
    from=1
    while true ; do
	to=`expr "$from" + "$inc" - 1`
	if [ "$to" -gt "$last" ] ; then
	    break
	fi
	show "$from-$to"
	from=`expr "$to" + 1`
    done
    if [ "$from" -le "$last" ] ; then
	show "$from-$last"
    fi
} |
  egrep -v '[a-zA-Z ]' |
  egrep -v '^$'
