IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 18 August 2011 (all times are UTC)
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| 03:52 | <bakytn> Good [morn|even]ing!
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| 03:53 | is it possible to set wrong password timeout? (timeout if user provides wrong password)?
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| 05:04 | <_aaron_> hi
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| 05:30 | <alkisg> bakytn: pam_unix already enforces a delay of 2 seconds, if you need more, see: man pam_faildelay
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| 05:30 | (completely unrelated to ltsp)
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| 05:31 | <bakytn> it's unrelated to ltsp? okay..
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| 05:32 | I have users with some printers! May I use configuration inheriting when it comes to such uesrs? like I create a section in lts.conf called "CANON-LBP1120" and specify per device using LIKE will it inherit it's configs?
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| 05:34 | <alkisg> I didn't understand the "users with some printers", do you mean that you have printers connected to some thin clients?
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| 05:36 | <bakytn> yes, say couple of users have USB printers and I don't to set type printer config per each such users
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| 05:36 | I'd just create a section and use LIKE
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| 05:37 | <alkisg> lts.conf doesn't support per user settings, so can you please rephrase your question without saying the word "user"?
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| 05:37 | Use "thin client" instead
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| 05:37 | <bakytn> sorry, ok. per device (thin client)
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| 05:37 | MAC
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| 05:38 | MAC_ADDRESS
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| 05:38 | <alkisg> Yes, you can group common settings in a LIKE sections
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| 05:40 | <bakytn> thank you
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| 05:40 | (fighting with LBP printers :D)
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| 11:53 | <Gremble> heya all
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| 11:54 | today, I'm trying to mount a volume from outside a guest into that guest
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| 11:54 | while it's running
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| 11:56 | <Hyperbyte> Cool. :)
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| 11:56 | Today I'm trying to see if 389 Directory Server is worth the effort.
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| 11:57 | <muppis> Dealing with Heartbeat, DRBD, LVM and iSCSI
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| 11:57 | <Appiah> it was kind of "meh" for me
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| 11:58 | <Hyperbyte> Appiah, 389? Why?
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| 11:58 | muppis, is DRBD easy to setup? I've been looking into it and it seems pretty promising.
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| 11:59 | <muppis> Hyperbyte, yes, it is easy.
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| 12:01 | <Gremble> "Note that this not work for adding a bindmount (-o bind) of a directory outside of a vserver into the vserver. For this, there is no alternative but restarting the vserver."
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| 12:01 | ah, but that's what I want to do!
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| 12:01 | damn
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| 12:01 | <alkisg> "guest" means KVM guest?
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| 12:05 | <Gremble> alkisg, no, linux-vserver guest
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| 12:06 | why would it mean KVM guest?
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| 12:06 | <muppis> Hyperbyte, I think in my case most hardest part is set up the Heartbeat. :)
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| 12:07 | <alkisg> I don't know, we're in #ltsp, I'd expect an "ltsp guest" :D
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| 12:16 | <shawnp0wers> Out of curiosity, does anyone know what part of the ltsp-server install process (in ubuntu) writes the nbd-server bits at the end of inetd.conf? In about half my installs, it doesn't get done, so nbd-server never starts. I have to manually add the line to inetd in order to get it to start.
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| 12:16 | I'm just curious what part of the install I'm messing up. :)
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| 12:19 | <alkisg> shawnp0wers: are you using the alternate cd, or just calling `apt-get install ltsp-server` ?
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| 12:19 | <shawnp0wers> The latter, usually install Ubuntu (or Edubuntu) desktop from a network install CD.
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| 12:20 | <alkisg> In ltsp-server.postinst, there's this line:
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| 12:20 | update-inetd --group LTSP --add "9572 stream tcp nowait nobody /usr/sbin/tcpd /usr/sbin/nbdswapd"
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| 12:20 | <shawnp0wers> Obviously it's not a *big* deal (apart from the first time figuring out what was wrong)
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| 12:20 | <alkisg> Also, when one calls `ltsp-update-image --force`, inetd is updated
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| 12:21 | <shawnp0wers> so the —force flag adds inetd stuff, interesting.
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| 12:21 | <alkisg> Now, ltsp-server.postinst does call ` ltsp-update-image -a i386; ltsp-update-kernels` but I'm not sure if that updates inetd.conf too
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| 12:21 | <shawnp0wers> It does not, I'm certain of that. ;)
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| 12:21 | <alkisg> Are you using i386 server/i386 chroot?
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| 12:21 | <shawnp0wers> Sadly yes, my servers are the last generation of 32bit xeons made
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| 12:22 | still suprisingly fast, but old
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| 12:22 | <alkisg> Ah also normally it won't work, since on postinst you don't have a chroot yet
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| 12:23 | <alkisg> So let's get it again, from the start: 1) apt-get install ltsp-server, 2) ltsp-build-client --params
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| 12:23 | We don't really care about the (1) part, do we? It's the (2) part that needs to work
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| 12:23 | <shawnp0wers> Well, I also normally cheat and rsync a good working chroot from another server, then ltsp-update-sshkeys, kernel, image.
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| 12:24 | <alkisg> Ah, that's why then, because you're cheating :P :D
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| 12:24 | <shawnp0wers> :D
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| 12:24 | <alkisg> So, I'm guessing that ltsp-build-client does update inetd,
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| 12:24 | while plain rsync + ltsp-update-image doesn't,
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| 12:24 | <shawnp0wers> Yeah, I'm certainly not complaining, I just wondered what part of the "normal" process did it.
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| 12:24 | <alkisg> so you need to run ltsp-update-image --force instead
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| 12:24 | <shawnp0wers> I'll have to try that.
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| 12:25 | I'm also not sure if the nbdswap line is added, but I think that one was there, just not the port 2000 line
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| 12:25 | <alkisg> In any case we ltsp won't be using inetd in the future, so... :D
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| 12:25 | s/we//
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| 12:25 | <shawnp0wers> oh great, so I just learn it..
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| 12:25 | ;)
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| 12:26 | What will it use, again, curiosity.
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| 12:26 | <shawnp0wers> regular config file?
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| 12:26 | <alkisg> nbd-server has support for name-based exports, so we'll be switching to using the nbd-server configuration file instead of inetd
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| 12:26 | <shawnp0wers> gotcha. That was actually confusing as heck while I was troubleshooting nbd-server at first.
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| 12:27 | "But my WORKING servesr don't have a config file either, aaahhhh!!!"
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| 12:27 | :)
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| 12:27 | <alkisg> hehe very common problem :)
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| 12:28 | <shawnp0wers> I actually considered just using my one "really good" chroot, and setting up clustering.
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| 12:29 | But clustering still scares me.
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| 12:29 | And now that stgraber is at Canonical, I don't think he's working on cluster. So… I just keep multiple servers running, and manually load balance.
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| 12:30 | <veloutin> shawnp0wers: there are still mgariepy and highvoltage that work on cluster I guess
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| 12:31 | s/work/could be working/
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| 12:31 | <shawnp0wers> Oh, that's encouraging. I saw stgraber's blog post about stepping down, I wasn't sure if anyone else was picking up the reins. :)
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| 12:32 | Oddly, it was the web interface (which I think was one of its big advantages) that turned me off. I just want config files. ;)
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| 12:32 | <veloutin> yeah, I actually worked for a few months on a new (forgive me for using that word:) ajax-ey control panel
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| 12:33 | but it was never completed and the financing stopped
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| 12:33 | <shawnp0wers> I think a frontend to the config is a GREAT idea, it's just the lack of underlying files that gives me the willies.
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| 12:33 | Although admittedly, the lts.conf file is pretty small these days. :)
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| 12:34 | <veloutin> well, it is pretty small, but when you have to manage small changes to it for hundreds of clients, it becomes annoying
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| 12:35 | <shawnp0wers> Yes. I was still using 4.2 until this month, and THAT lts.conf file was huge.
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| 12:38 | <shawnp0wers> Oh, and alkisg, thanks for the help. :)
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| 12:39 | <_UsUrPeR_> alkisg: ping?
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| 12:39 | sup shawnp0wers
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| 12:39 | <shawnp0wers> Just setting up a couple hundred thin clients for school start
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| 12:40 | <_UsUrPeR_> yay!
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| 12:40 | what release?
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| 12:40 | <shawnp0wers> No more LTSP 4.2 here! :D
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| 12:40 | * _UsUrPeR_ gasps | |
| 12:40 | <shawnp0wers> (ok, not entirely true, I have one 4.2 server running that boots those old tiny thin clients from you guys, they boot directly into rdesktop)
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| 12:41 | <_UsUrPeR_> good place for 'em
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| 12:41 | <shawnp0wers> They work surprisingly well for that.
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| 12:41 | <_UsUrPeR_> yeah
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| 12:41 | 64 megs goes a long way for rdesktop
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| 12:41 | <shawnp0wers> And I think they have a 233Mhz cpu
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| 12:41 | hardcore baby
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| 12:41 | :)
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| 12:42 | <_UsUrPeR_> You know how they roll. Oldschool 233 mHz in tha hizzy
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| 12:43 | <shawnp0wers> Every other thin client in the district is now running straight up edubuntu 10.04.
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| 12:44 | (I wanted a newer version, but LTS helps me sleep better at night.)
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| 12:44 | <_UsUrPeR_> LTS is definitely worth it.
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| 12:45 | <shawnp0wers> I *did* add the firefox-stable PPA, so we're running Firefox 6 now. 3.x was just getting long in the tooth.
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| 12:46 | <_UsUrPeR_> When is school back in for you?
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| 12:46 | <shawnp0wers> Day after Labor Day.
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| 12:46 | <_UsUrPeR_> ok. Sounds like you're on track
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| 12:47 | <shawnp0wers> I'm pushing it, but yeah, I'll be good.
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| 12:47 | Every year it's like this. I can't do it earlier, because they clean classrooms.
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| 12:47 | So if I set up rooms early, they'd rip them apart
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| 12:47 | so i get my servers ready
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| 12:47 | and wait until the last minute
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| 12:47 | then things go wrong, and I tweak my servers, etc, etc, etc
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| 12:47 | :)
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| 12:48 | <_UsUrPeR_> yeah
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| 12:49 | I envision the classroom cleaning room as some sort of cold war gas mask flamethrower-wielding team
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| 12:49 | err classroom cleaning team
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| 12:49 | <alkisg> _UsUrPeR_: pong?
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| 12:49 | <shawnp0wers> They're about that gentle to be sure. I end up with a literal pile of hardware to sort out in each room.
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| 12:50 | <_UsUrPeR_> alkisg: good morning! a question for you: you had mentioned the following yesterday: su - ${LDM_USERNAME} -c "$CLIENT_ENV $MY_LANG DISPLAY=$DISPLAY ICEAUTHORITY=$ICEAUTHORITY XAUTHORITY=$XAUTHORITY $LDM_XSESSION $LDM_SESSION"
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| 12:50 | where is that executed?
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| 12:50 | <alkisg> in X95-run-x-session or similar
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| 12:50 | * _UsUrPeR_ tips his hat | |
| 12:50 | <_UsUrPeR_> thank you much alkis
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| 12:51 | <alkisg> _UsUrPeR_: but remember, you don't need that
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| 12:51 | You just need to set CLIENT_ENV with an env var from ltsp_config.d, and pick it up from the server,
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| 12:51 | OR do everything in an rc.d script similar to the one that does the gnome menus
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| 12:52 | The first, CLIENT_ENV, is just a 2 line script
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| 12:52 | <_UsUrPeR_> alkisg: I am having trouble getting the CLIENT_ENV variable passed to the server, and need to investigate why that is
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| 12:52 | <alkisg> _UsUrPeR_: what code are you using to detect multicore?
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| 12:53 | I.e. let's write that 2 line script. The first line is the condition
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| 12:53 | When do you want that env var to be set?
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| 12:53 | <_UsUrPeR_> alkisg: actually, it's a particular unit type right now if [[ `cat /sys/devices/virtual/dmi/id/product_name` = "VS433" ]]
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| 12:54 | <alkisg> Don't rely on bash-isms, afaik [[ is bash-specific
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| 12:54 | <_UsUrPeR_> I want it set just prior to the user logging in
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| 12:54 | this is an automatically logged-in client
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| 12:54 | ORLY
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| 12:54 | <alkisg> OK, what env var do you want set?
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| 12:54 | <_UsUrPeR_> didn't know that mattered
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| 12:54 | LTSP-ENABLE is a fine descriptor
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| 12:55 | <alkisg> _UsUrPeR_: why not expose PRODUCT_NAME instead, and do the comparison on the server?
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| 12:55 | Isn't that more generic?
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| 12:56 | <_UsUrPeR_> never even considered it. That is a really good idea
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| 12:57 | <alkisg> OK, so create this file: /opt/ltsp/i386/usr/share/ltsp/ltsp_config.d/010-product-name
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| 12:57 | with these contents:
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| 12:57 | <alkisg> read PRODUCT_NAME < /sys/devices/virtual/dmi/id/product_name
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| 12:57 | export PRODUCT_NAME
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| 12:57 | Wait, you want that on the server,
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| 12:57 | so:
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| 12:58 | read PRODUCT_NAME < /sys/devices/virtual/dmi/id/product_name
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| 12:58 | test -n "$PRODUCT_NAME" && export CLIENT_ENV="$CLIENT_ENV PRODUCT_NAME=$PRODUCT_NAME"
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| 12:58 | These 2 lines should give your PRODUCT_NAME on the server session
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| 12:59 | (you need ltsp-update-image of course)
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| 13:01 | <_UsUrPeR_> ok, put that in ltsp_config.d
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| 13:01 | * _UsUrPeR_ is rebuilding now | |
| 13:02 | <alkisg> _UsUrPeR_: Hmm and just to be safe for the ltsp code that uses CLIENT_ENV, put a junk variable to ignore spaces, like this:
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| 13:02 | read PRODUCT_NAME junk < /sys/devices/virtual/dmi/id/product_name
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| 13:02 | test -n "$PRODUCT_NAME" && export CLIENT_ENV="$CLIENT_ENV PRODUCT_NAME=$PRODUCT_NAME"
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| 13:02 | E.g. my netbook has "Calistoga & ICH7M Chipset" as the product name, that would cause problems to the rest of the ltsp code
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| 13:03 | <_UsUrPeR_> oh
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| 13:03 | indeed it would
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| 13:04 | * _UsUrPeR_ re-rebuilds image | |
| 13:06 | <alkisg> Hehe, and an even better version: PRODUCT_NAME=$(tr -c [a-zA-Z0-9] _ < /sys/devices/virtual/dmi/id/product_name)
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| 13:07 | That makes sure that product name only contains alphanumeric characters
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| 13:07 | <_UsUrPeR_> alkisg: ok, now I need to catch this on the server side
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| 13:07 | <shawnp0wers> alkisg, your geek is showing. ;)
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| 13:07 | <alkisg> Haha
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| 13:07 | * _UsUrPeR_ covers his eyes | |
| 13:07 | <alkisg> _UsUrPeR_: now, login on a thin client, and open a normal terminal (not local)
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| 13:07 | And type: echo $PRODUCT_NAME
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| 13:07 | You should be seeing the product name, right?
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| 13:08 | <_UsUrPeR_> heyyyyyyyyyy
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| 13:08 | yeah ^_^
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| 13:08 | <alkisg> OK, your show from now on :)
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| 13:11 | <bobapple> uhhm... may i ask what you are doing?
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| 13:11 | <alkisg> Getting the thin client product name into an environment variable on the user session that runs on the server
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| 13:12 | <bobapple> cool
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| 13:12 | why?
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| 13:12 | <alkisg> To do different stuff on the server, based on the hardware of the thin client. Specifically I think _UsUrPeR_ wants to do something about the icewm localapps menu
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| 13:13 | <bobapple> sounds interesting
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| 13:13 | * _UsUrPeR_ is interested | |
| 13:13 | <_UsUrPeR_> got it working
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| 13:14 | 8) AWWWWWWWWWWWW YEAHHHHHHHHHHHHHH
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| 13:14 | thanks alkisg
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| 13:14 | <alkisg> You're welcome :)
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| 13:22 | _UsUrPeR_: don't forget to use that line instead, it's much safer: PRODUCT_NAME=$(tr -c [a-zA-Z0-9] _ < /sys/devices/virtual/dmi/id/product_name)
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| 13:22 | bye all
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| 14:04 | * Hyperbyte has been trying to get X11Forwarding working between two machines for two hours now... | |
| 14:04 | <Hyperbyte> Sometimes I really hate Linux. :(
| |
| 14:06 | ... there... works! See, usually ranting to myself on IRC helps.
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| 14:11 | <bobapple> :D
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| 14:23 | <Appiah> :D
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| 14:23 | <Hyperbyte> Appiah, you never answered my question! :)
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| 14:24 | Why was 389 "meh" for you?
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| 14:25 | <Appiah> oh
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| 14:25 | Think this was 1 or 2 years ago
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| 14:25 | I was testing 389 for "ad intergration" purpose
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| 14:25 | both ltsp and non-ltsp use
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| 14:26 | but setting up the sync was awful and sometimes it just did not want to work , I ended up doing a samba domainjoin instead , but now there's likewise and that's about enough for my use cases
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| 14:26 | I think I reported some bugs concerning the 389 console too
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| 14:28 | so I've been sticking to openldap
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| 14:29 | trying to think back to that time.. think I tried to package it or contact people who were in the process of packaing to debian/ubuntu
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| 14:45 | <Appiah> https://bugs.launchpad.net/ubuntu/+bug/27463 and it looks dead =/
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| 14:47 | <Hyperbyte> Well
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| 14:47 | I'm using Fedora as network server though
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| 14:49 | Ubuntu is my LTSP server. :)
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| 14:50 | <Appiah> network as in firewall/nat?
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| 14:52 | <Hyperbyte> Firewall, nat, dhcpd, asterisk, cups, httpd, hylafax, mysqld, named, nfs, smb/nmb, ntpd, sendmail, squid....
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| 14:52 | Yeah. :)
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| 14:52 | <Appiah> everything!
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| 14:52 | :)
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| 14:53 | <Hyperbyte> And ypserv as well, which I wanna replace with 389
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| 14:54 | <Appiah> I see
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| 19:19 | <jk-cheng> hi there...
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| 19:20 | <jk-cheng> for thin client, should i use a server with gui or without gui???
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| 19:20 | <tl1000s77> Hello everyone. Quick question, how would I install the Intel 910GL video driver for the thin client? I have a Dell SX280 and it runs fine but I can't change the resolution above 1024x768.
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| 19:21 | <alkisg> jk-cheng: you need a desktop environment on the server
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| 19:22 | tl1000s77: what's the output of `xrandr` if you run it on the client?
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| 19:23 | <jk-cheng> thanks alkisg...
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| 19:26 | <tl1000s77> alkisg: http://pastebin.com/QJkqVGju
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| 19:27 | <alkisg> tl1000s77: try running: xrandr --output VGA1 --mode 1360x768
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| 19:27 | Did the resolution change?
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| 19:29 | <tl1000s77> yes
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| 19:29 | is 1360x768 the highest it will go?
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| 19:30 | <alkisg> What's the highest resolution your monitors supports?
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| 19:33 | <tl1000s77> according to the ViewSonic manual, 1680x1050
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| 19:33 | I'm looking for 1280x1024 which it will support
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| 19:34 | <tl1000s77> Can I set the 1360x768 in the lts.conf?
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| 19:35 | <alkisg> tl1000s77: try the following commands:
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| 19:35 | xrandr --newmode 1280x1024 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync
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| 19:35 | xrandr --addmode VGA1 1280x1024
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| 19:35 | xrandr --output VGA1 --mode 1280x1024
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| 19:35 | Yes, you can set XRANDR_MODE_0=1360x768 in lts.conf
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| 19:40 | <tl1000s77> Do I have to specify a display? I'm getting a usage error
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| 19:41 | <alkisg> Usage error or X error?
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| 19:41 | Can you paste it?
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| 19:42 | <tl1000s77> usage error...it shows usage: xrandr [options]
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| 19:42 | <alkisg> In which command? The first one?
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| 19:42 | xrandr --newmode?
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| 19:42 | <tl1000s77> yes
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| 19:42 | in --newmode
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| 19:43 | <alkisg> alkisg@alkis:~$ xrandr --newmode 1280x1024 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync
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| 19:43 | alkisg@alkis:~$
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| 19:43 | Did you copy/paste the command? Or did you type it?
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| 19:43 | <tl1000s77> type
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| 19:43 | <alkisg> Check for typing errors
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| 19:48 | <tl1000s77> great! it works. How would I make it stick?
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| 19:49 | and where did you look to get this information? 109.00 1280 1368 1496 1712 1024 1027 1034 1063
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| 19:50 | <alkisg> cvt 1280 1024
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| 19:50 | To make it stick, read the lts.conf man page about the xrandr options, new mode etc
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| 19:51 | <tl1000s77> will do. Thanks again for all your help
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| 19:51 | <alkisg> You're welcome
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| 20:00 | <_UsUrPeR_> hey
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| 20:00 | what's the echo return for the ldm username in ltsp?
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| 20:00 | is it $LDM_USERNAME?
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| 20:02 | <alkisg> _UsUrPeR_: at which point? E.g. inside the session, $USER is defined normally...
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| 20:03 | <_UsUrPeR_> say it's the logged in user from root?
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| 20:04 | <alkisg> Err I didn't understand that
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| 20:04 | Maybe say more about what are you trying to do?
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| 20:04 | <_UsUrPeR_> ok, as a script on the chroot, how do I see who is logged in?
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| 20:05 | to that specific client
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| 20:05 | <alkisg> A script running from where?
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| 20:05 | <_UsUrPeR_> and not "ls /home" or anything janky :)
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| 20:05 | <alkisg> E.g. if it ran from cron.... you can have multiple ldm sessions, multiple users logged on
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| 20:05 | If it runs from rc.d, then yes, LDM_USERNAME is available
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| 20:05 | <_UsUrPeR_> the script would be run from /usr/share/ldm/rc.d on the client
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| 20:06 | <alkisg> Yup, LDM_USERNAME then
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| 20:06 | <_UsUrPeR_> huh. Ok, strange
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| 20:06 | <alkisg> You can also run something like: env > /tmp/my-environment, for troubleshooting
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| 20:06 | (from within the script)
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| 20:07 | <_UsUrPeR_> gotcha
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| 20:10 | <tl1000s77> alkisg: I noticed that there isn't a XRANDR_ADDMODE...is there something else that does the same thing?
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| 20:11 | atleast not on the http://manpages.ubuntu.com/manpages/lucid/man5/lts.conf.5.html
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| 20:13 | <alkisg> tl1000s77: I think xrandr_newmode automatically calls addmode for all the outputs
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| 20:14 | So you don't need addmoe
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| 20:14 | *addmode
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| 20:14 | <tl1000s77> so I should only need XRANDR_NEW_MODE_07 and then XRANDR_MODE_07
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| 20:15 | <alkisg> Hm. Or not. Let me check the code...
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| 20:19 | I don't see the xrandr script calling --addmode... file a bug about that, or ask Gadi, if you see him here
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| 20:21 | <tl1000s77> will do. Where can I get the code?
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| 20:22 | <alkisg> /opt/ltsp/i386/usr/share/ltsp/xinitrc.d/I10-xrandr
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| 20:23 | Or, at:
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| 20:23 | !ltsp-source
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| 20:23 | <ltsp> alkisg: ltsp-source: at http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ltsp-trunk/files.
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| 20:26 | <tl1000s77> thank you
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| 23:53 | <quietone> i really need help with setting this up. I don't know how to setup up the dhcp etc
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