#!/bin/sh
echo Content-type: text/html
echo
N=$QUERY_STRING
echo ""
echo "the counting cgi"
echo ""
echo "The Counting CGI
"
case "x$N" in
x)
N=1
echo "This is the intial page.
"
;;
x[0-9]*)
N=`expr $N + 1`
echo "You have displayed this page $N times.
"
;;
*)
echo "The URL you used is invalid."
exit 0
;;
esac
echo ""
echo "Click here to refresh the page."
echo " "
echo "