Generate subClassOf ontologies, only made of successive subClassOf relations

subClassOf_generator.sh

#!/bin/bash

if [[ $# -ne 1 ]]; then
	echo "usage : $0 <size>";
	exit -1;
fi;

if [[ $1 -le 2 ]]; then
	echo "usage : $0 <size>";
	echo "size must be at least 2"
	exit -1;
fi;

name=subClassOf$1;
author=$USER;

prefix="http://www.semanticweb.org/$author/ontologies/2014/0/$name";
Type="http://www.w3.org/1999/02/22-rdf-syntax-ns#type";
Class="http://www.w3.org/2002/07/owl#Class";
Ontology="http://www.w3.org/2002/07/owl#Ontology";
SubClassOf="http://www.w3.org/2000/01/rdf-schema#subClassOf";

i=2;

echo "<$prefix> <$Type> <$Ontology> ." > $name.nt;
echo "<$prefix#1> <$Type> <$Class> ." >> $name.nt;

while [[ $i -le $1 ]]; do
	echo "<$prefix#$i> <$Type> <$Class> ." >> $name.nt;
	echo "<$prefix#$i> <$SubClassOf> <$prefix#"$(($i-1))"> ." >> $name.nt;
	i=$(($i+1));
done