<div>On 9/1/06, James P. Kinney III <<a href="mailto:jkinney@localnetsolutions.com">jkinney@localnetsolutions.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On Fri, 2006-09-01 at 16:17 -0700, Robert Arkiletian wrote: > > > On 9/1/06, James P. Kinney III <<a href="mailto:jkinney@localnetsolutions.com">jkinney@localnetsolutions.com</a>> wrote: > On Fri, 2006-09-01 at 14:08 -0700, Robert Arkiletian wrote: > > > > > > > Any suggestions? > > > > TeacherTool is blowing away the folks in Atlanta! > > Watching the look as we launched 23 simultaneous copies of > OpenOffice with one button click was priceless! > > The speedup with the IP address only (instead of the hostname) > I am > willing to sacrifice in favor of the hostname list and a way > to filter > the list. We are going to have 150-180 thin clients per server > (Big > Servers!) and the fun of a teacher accidentally logging out a > student > in another room is not something I want to play with :) > > > Hmm. This is an issue when you have big servers. Without doing big > additions to my code :) I have a couple of ideas. > > 1) Not sure if each student has their own username but if they are > just using generic logins like comp1, comp2, comp3, etc then you can > differentiate with usernames like Acomp1, Bcomp1, Ccomp1, etc where > A,B,C stand for different rooms. Fl_TT will sort alphabetically so all > students in room A will be in one solid block in the list. We have a mix of autologon by machine name and individual logon that will track the student through the school (Middle school kids change classes). So for the most part, sorting by logon name will be a challenge. > > 2)I just thought of this but it's kind of tricky since dhcp gives out > ip's dynamically. If you can manage to tie an ip address to a specific > mac address (client machine) you could potentially make each machine > according to their mac address (and therefore location or classroom) > start a tiny little program at login that does nothing and takes up > almost no memory. The important aspect would be the name of the > program. Call it "classA" for all computers in room A. I think you get > the idea. So you could therebye use the FIND button in Fl_TT to select > only those users who are in room A by typing "classA" and hitting > FIND. You could then broadcast, logout, whatever and only affect the > kids in your room. We are doing fixed address dhcp. We have a host name scheme based on room number ans workstation number (i.e. rm114ws05). This is why I was thinking about the filtering ability.</blockquote> <div> Ahh. I see. </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">> > > > I have tweaked the source files and have the hostname back on. > If you > have any suggestions on a best way to implement a filter > ("show only > hostnames that begin with foo") I'll look at a patch. > > I'm not sure why ip is less useful than hostnames since by default an > ip of say MailScanner warning: numerical links are often > malicious:<a href="http://192.168.0.252">192.168.0.252</a> translates to ws252.ltsp. Since Fl_TT can't > access another K12LTSP server the .ltsp part of the hostname should > always be the same. Well, the last version I was using (what shipped with K12LTSP v. 5.0.0) had the IP only code and didn't display the host name for the clients. That works for (I can think in hex on good days. I dream in perl. I need help! :) I was thinking about potentially 4000 teachers seeing dotted quads and having to be trained to see all that in the room. We will be labeling the screen very visibly but text makes more sense to them that IP addresses.</blockquote><div> I see your desire for hostnames. </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I was looking at the line that produces the list of machines and took out the "-n" to regain the host names. As the names will be in</blockquote><div> It's not that simple. putting the -n back in will make things very slow especially if you have many users. I have just finished modifying 0.34 to give you back your hostnames without the speed penalty. At this point I don't feel this justifies a 0.35 release. Not sure how many people would find this useful. I am just going to send you the code. Compile etc, etc and see how you like it. Let me know how it works for you. </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">the /etc/hosts file it's a fast enough lookup. So now I'm looking at a wrapper script that asks for the room number on launch and then uses that to only display machines with that string in it. It's a bit of a kludge as it requires a) a fixed implementation of room number in the host name and b) it requires more input from the teachers on start up. If I can get thin clients in front of the teachers, I can name them in a similar way (rm103ts01) and then the wrapper script can simply read the hostname of the launching system and display the matching clients. Basically the wrapper script just passes the string to the main app that will be used to match the hostnames with. There will be a modification to the actual teachertool to accommodate being passed a variable and to do a grep on the list. Once I have it working, I'll send a patch. > > > Also needed is a way to refresh the machine list without > having to > restart the tool. > > Just click on the Users button whenever you want a refreshed list. No > need to restart. Ah! Many thanks! > > > -- > James P. Kinney III > CEO & Director of Engineering > Local Net Solutions,LLC > 770-493-8244 > <a href="http://www.localnetsolutions.com">http://www.localnetsolutions.com</a> > > GPG ID: 829C6CA7 James P. Kinney III ( M.S. Physics) > <<a href="mailto:jkinney@localnetsolutions.com">jkinney@localnetsolutions.com</a>> > Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C > 6CA7 > > > _______________________________________________ > K12OSN mailing list > <a href="mailto:K12OSN@redhat.com">K12OSN@redhat.com</a> > <a href="https://www.redhat.com/mailman/listinfo/k12osn"> https://www.redhat.com/mailman/listinfo/k12osn</a> > For more info see <<a href="http://www.k12os.org">http://www.k12os.org</a>> > > > > > > -- > Robert Arkiletian > Eric Hamber Secondary, Vancouver, Canada > Fl_TeacherTool <a href="http://www3.telus.net/public/robark/Fl_TeacherTool/">http://www3.telus.net/public/robark/Fl_TeacherTool/</a> > C++ GUI tutorial <a href="http://www3.telus.net/public/robark/"> http://www3.telus.net/public/robark/</a> > _______________________________________________ > K12OSN mailing list > <a href="mailto:K12OSN@redhat.com">K12OSN@redhat.com</a> > <a href="https://www.redhat.com/mailman/listinfo/k12osn"> https://www.redhat.com/mailman/listinfo/k12osn</a> > For more info see <<a href="http://www.k12os.org">http://www.k12os.org</a>> -- James P. Kinney III CEO & Director of Engineering Local Net Solutions,LLC 770-493-8244 <a href="http://www.localnetsolutions.com">http://www.localnetsolutions.com</a> GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics) <<a href="mailto:jkinney@localnetsolutions.com">jkinney@localnetsolutions.com </a>> Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7 _______________________________________________ K12OSN mailing list <a href="mailto:K12OSN@redhat.com">K12OSN@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/k12osn">https://www.redhat.com/mailman/listinfo/k12osn</a> For more info see <<a href="http://www.k12os.org">http://www.k12os.org</a>> </blockquote></div> -- Robert Arkiletian Eric Hamber Secondary, Vancouver, Canada Fl_TeacherTool <a href="http://www3.telus.net/public/robark/Fl_TeacherTool/">http://www3.telus.net/public/robark/Fl_TeacherTool/ </a> C++ GUI tutorial <a href="http://www3.telus.net/public/robark/">http://www3.telus.net/public/robark/</a>