X Windows Terminal

X Windows can be used in a Server-Client relationship. By setting up your X Windows Server you allow the use of all the programs on that computer to all the client PC's.

There are many advantages of running client computers in this manner:

They don't even need a hard drive.

It's silent as there are no moving parts

The solution saves power as your computers are very thin.

Everything can be backed up centrally.

Boot times for client PC's are the fastest around.

Clients don't need much CPU speed, memory, etc. Because of this they would be very cheap. You could get away with using a Pentium 100Mhz with 32MB ram, no hard drive, no CD-ROM, no Floppy and a fanless power supply. You just need a ethernet card with a PXEBOOT ROM.

Running a single application

To get started I have my server setup running FreeBSD, with X-Windows and a few applications. Nothing too special. Then I have my client PC, which to start off I used the freesbie 1.1 boot CD to perform these initial tests. You can get this from www.freesbie.org. I entered into fluxbox, but you could equally use xfce4.

client# xhost +

This allows all computers to start applications on your client PC. It's dangerous but good for testing everything is setup correctly.

client# ssh <server user@server ip>

eg: ssh mick@192.168.1.1

ssh$ DISPLAY=<client ip>:<client display>; export DISPLAY

eg: DISPLAY=192.168.1.2:0; export DISPLAY

ssh$ xcalc &

This should display on your client

Running a whole X Windows Session (XDM)

server

edit: /usr/X11R6/lib/X11/xdm/xdm-config

comment out with a '!' the request line
DisplayManager.requestPort: 0

edit:
/usr/X11R6/lib/X11/xdm/Xaccess

to have a single asterisk any where in the file, so the contents should be one asterisk and the rest commented out.

Make sure your firewall has all traffic for you lan. (Need to know which exact ports to allow).

create ~/.xsession for each user which requires access and enter your start up for x eg:

shell#!/bin/sh
startkde

run xdm on server as root

client

make sure your not in X

type this command:

shell# X -broadcast

This assumes that you are running only one server. Otherwise use:

shell# X -query 192.168.1.2

GRUB Floppy boot

(would like to compile this ourselves later) To get started we downloaded the image from www.hp.uab.edu/~ed/grub-net

1. dd if=/data/grub-net.img of=/dev/fd0

Then we mounted it as msdos Remove/rename menu.1st from the grub directory as it was doing something funny with it. We think that it was looking for a tftp server through our dhcp and we don't have a the dhcp setup correctly here, so we wanted to do it manually.

Reboot off the floppy now..

grub> ifconfig --address=192.168.1.2 --mask=255.255.255.0 --gateway=192.168.1.1 --server=192.168.1.2

OR you can use dhcp grub> dhcp

These commands are half working... grub> root (nd) grub> kernel /kernel root=ad0s1a grub> boot

Completely Diskless System (PXEBOOT ROM)

Running completely diskless by booting from a Network ROM Chip.

Coming soon...