[K12OSN] Lab Monitoring

[David Trask]

FL-teachertool ROCKS!


"Support list for open source software in schools." <k12osn at redhat.com> on
Sunday, August 20, 2006 at 2:25 PM +0000 wrote:
>
>
>On 8/20/06, Mel Wade <[ mailto:mel at melwade.com ]mel at melwade.com> wrote:
>
>
>Is there a way to monitor the screens of the lab computers running
>K12LTSP?  We need to be able to view what any particular user is doing
>for a school lab environment.
>
>
>
>Yes, as others have mentioned, fl_teachertool will do that and more
>things like broadcasting a window to all students for demo purposes. 
>
>If you are using K12LTSP 5.0 
>
>1) Edit the file /opt/ltsp/i386/etc/lts.conf and uncomment (remove the
>"#") from the following line:
>
>                 X4_MODULE_02 = vnc
>
>2) Now you'll have to make a password for the vnc-session. Run this
>command as root user: 
>
>                /usr/bin/vncpasswd
>
>3) Again as root user copy the password file into the ltsp-tree
>
>               cp -R -p /root/.vnc /opt/ltsp/i386/root/
> 
>4) Reboot your clients
>
>As for allowing teachers to run the program. 
>
> Setting Up Fl_TeacherTool to run with sudo:
>   
>    Step 1
>    Create a group for teachers using "system-config-users".
>    For example 'teachers'. Then add that group to all the users who
>    you wish to run fl_teachertool.
>   
>    Step 2
>    become root with
>    $su -
>    Then run "visudo". It's a special editor for the sudoers file.
>    Add the following line to the end of the file using vi editing
>techniques 
>   
>    %teachers  ALL=NOPASSWD:/usr/sbin/fl_teachertool
>   
>    make sure that it's not the last line
>    (in other words: don't forget to hit enter)
>    If you don't know vi then just goto the last line and hit the 
>    letter "i" for (insert) then type the above line, hit enter, then hit
>    the escape key. Now type    :wq     (hit enter) this saves and exits.
>   
>    Step 3
>    If your fellow teachers are not comfortable typing "sudo
>/usr/sbin/fl_teachertool" then add an 
>    alias in file .bashrc (notice it starts with a period) in the home
>directory of the people who will run the program like this
>   
>    # User specific aliases and functions
>    alias teach='sudo /usr/sbin/fl_teachertool' 
>
>    Then they only have to type "teach"
>   
>    or alternatively put a launcher icon with the command
>    sudo /usr/sbin/fl_teachertool
>    on their desktop
>
>    Enjoy!
>
>
>
>
>-- 
>Mel Wade
>"I love it when a plan comes together." - Hannibal 
>[ http://www.melwade.com ]www.melwade.com 
>
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>
>
>
>
>
>
>-- 
>Robert Arkiletian
>Eric Hamber Secondary, Vancouver, Canada
>Fl_TeacherTool [ http://www3.telus.net/public/robark/Fl_TeacherTool/
>]http://www3.telus.net/public/robark/Fl_TeacherTool/ 
>C++ GUI tutorial [ http://www3.telus.net/public/robark/
>]http://www3.telus.net/public/robark/_______________________________________________
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David N. Trask
Technology Teacher/Director
Vassalboro Community School
dtrask at vcsvikings.org
(207)923-3100