#!/bin/sh
###############################################################################
##
## Copyright (C) 1997 Chris Johnson (sixie@nccnet.co.uk)
##
###############################################################################
#
# These hosts are colon delimited and contain three fields:
# 1. The name of the destination (use a _ for a space in this field).
# 2. The gateway for the destination
# 3. The URL of the owner of the gateway/backbone without the http:// bit
HOSTS=' NCC_Net:alpha.nccnet.co.uk:www.nccnet.co.uk
NCC_Net_gateway:skynet-nccnet-s2.sky.net.uk:www.skynet.co.uk
America_(1):905.Hssi5-0.GW1.TCO1.ALTER.NET:www.alter.net
America_(2):ds2.internic.net:www.internic.net
Canada:core1.Montreal.iSTAR.net:www.istar.net
The_LINX:london.linx.net:www.linx.net
Europe:stockholm5.att-unisource.net:www.att-unisource.net
Janet:smds-gw.thouse.ja.net:www.ja.net'
cat <<-!
Content-type: text/html
How far can I get?
Access to the World
In the table shown below, is the current state of some of the worlds
gateways and routers. If one of these routers is shown as not responding
then this dose not automatically mean that you can not access that part
of the world, as there are often backups and other routes that can be
taken.
| Gateway |
Status |
Part of the world |
!
for i in $HOSTS
do
echo '| '
whereami=`echo $i | cut -d: -f1 | sed 's/_/ /g'`
whathost=`echo $i | cut -d: -f2`
url=`echo $i | cut -d: -f3`
echo "$whathost"
echo ' | '
ping -c 1 $whathost > /dev/null 2>&1
if [ $? -eq 0 ]
then
echo "UP | "
echo "$whereami is reachable |
"
else
echo "DOWN | "
echo "$whereami is not reachable | "
fi
done
cat <<-!
This page automatically updates every 15 seconds. If you leave
your browser on this page, you can watch as routers don't respond
for a couple of moments before continuing to work. Routers rarely
fail - if a router is down for more than a couple of minutes, then
it has died. Usually the router does not respond as it is too busy.
The link will take you to the owner of the backbone/router.
CGI by Chris Johnson (Sixie)
!