WOW!* Faster than iTALC and pretty easy to install as well.* I'll be letting you know how this continues--Now to translate some button names--or alkisg would you do them since I can't copy paste them into a translator?* I'll make it a neat write up though and put it into the wiki when I've tested it a bit more.* This is cool
David
On Wed, Jun 16, 2010 at 1:23 AM, Alkis Georgopoulos <alkisg@gmail.com> wrote:
Στις 15-06-2010, ημ*ρα Τρι, και ώρα 20:30 -0500, ο/η David Groos *γραψε:
> alkisg told me about a series of scripts that sound great that he uses
> instead of iTALC so I'm going to give them a try. *I'll be writing
> instructions on doing these tasks instead of iTALC unless I move back
> to using iTALC.
It's a Greek app that we developed to meet the needs of our local
schools:
http://wiki.ubuntu-gr.org/sch-scripts/screenshots
I'd like to internationalize and generalize it, but I'm starting my phd
so I won't have time to do it in the next 2 years. I'd be glad to help
if some python/shell programmer wants to do it, though.
It only works on Lucid. The toolbar buttons should replace most of iTalc
functionality, and are:
Wake on lan (the clients should be declared with their macs/hostnames in
lts.conf for this to work - that's done from the -greek- menus), Logoff,
Reboot, Shutdown, Broadcast teacher screen, End broadcast, Execute a
command on the clients, Lock student screens, Unlock student screens,
and Client properties.
The screen broadcasting is about 5 times faster than iTalc, and in my
experience, it's much much more stable. The clients and the users are
autodetected LIVE as they become available - there's no need to put them
in a configuration file. The client daemon only needs 1 MB RAM (=it's
just a /bin/sh). xvnc4viewer is automatically called on demand.
The teacher broadcasting also works in the ldm login screen, where the
users have not logged on yet.
Currently the teacher needs to have sudo rights to run the GUI, but for
the "classroom management" part this requirement could be easily
dropped, as the GUI communicates with the networking backend over a unix
socket owned by some group. So it's very easy to make it so that it can
be used by anyone in the "teachers" group.
The fat/thin chroot generation wizard won't be useful outside of Greece
as it is though, as it's too much focused on local schools. If some
programmer wanted it'd be nice if he generalized it though, as the
generated fat chroot allows for mixed labs (both thin+fat clients can
boot off of it) with min RAM=64Mb. It's working amazingly well.
To sum up: DON'T install it on any production environments without
trying it on a test lab first, and DON'T install it if you're not happy
with only understading the toolbar (the rest is in Greek)
More on this in 2 years. Cheers!
--
Some basic instructions for dgross:
On the server:
** sudo add-apt-repository ppa:ts.sch.gr
** sudo apt-get update
** sudo apt-get install sch-scripts
got the message that *restarting DNS forwarder and DHCP server ndsmasq
dnsmasq: failed to bind DHCP server socket: Address already in use.
alkisg on #edubuntu said that his scripts use dnsmasq not what I'm currently using: dhcp-3-server.
*
* This depends on (=installs) ltsp-server and also it sets up dnsmasq
* in ProxyDHCP mode.
* (https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP)
On the chroot:
** sudo cp /etc/apt/sources.list.d/ts.sch.gr-ppa-lucid.list
* * /opt/ltsp/i386/etc/apt/sources.list.d
** sudo chroot /opt/ltsp/i386
** apt-get update
got an error about 'W GPG error: ... because the public key is not available (mentioned the pub key which turned out to be a greek one, alkisg's, I'd guess.
So, I did a command that added that and re-updated.
it installed 2 files and said that the sch-scripts or something had started and gave a process number.
** apt-get install sch-client
I also did apt-get upgrade
** exit
** sudo ltsp-update-image
--
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