#!/bin/sh -

dir="$1"
pref="$2"
start="$3"
stop="$4"

if [ -z "$dir" -o -z "$start" -o -z "$stop" ]; then
	echo "Usage: $0 <dir> <prefix> <start> <stop>" >&2
	exit 1
fi

mkdir -p "$dir"
cd "$dir"

for i in $(jot $(($stop - $start + 1)) "$start"); do
	mkdir "$pref$i"
done