IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 29 June 2011   (all times are UTC)

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03:14
<Hyperbyte>
alkisg, ah, well that one's easy. I su'd from root, and that ignores all ~/.bash* files on Fedora
03:14
Sorry. =)
03:18
!learn Fedora as LTSP for Fedora is maintained by the K12Linux project. Currently support only goes as far as Fedora 12. An LTSP version for RedHat EL6 and possibly Fedora 14 is in development. https://fedorahosted.org/k12linux/
03:18
<ltsp>
Hyperbyte: The operation succeeded.
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03:56
<alkisg>
Hyperbyte: np - you can use this instead to get a normal login shell: su - ltsp
03:57
<Hyperbyte>
Ah
03:59
Good to know. =)
04:00
<vlt>
Hello. Is there a more elegant way to support users on their screens than ssh'ing to the client and run x11vnc there?
04:01
<Hyperbyte>
Yes, you could run x11vnc on boot. :P
04:01
If your client doesn't mind the extra RAM usage.
04:01
<alkisg>
vlt: you can set xauthority and DISPLAY so that you can run vnc directly on the user screen
04:02
Without starting anything beforehand
04:02
(requires root or at least access to the user account)
04:03
<vlt>
alkisg: Can you give an example?
04:03
alkisg: What do i need to set where and when?
04:03
<alkisg>
Here's an example: http://paste.ubuntu.com/634950/
04:04
<vlt>
alkisg: Thanks
04:04
<alkisg>
This executes a command in the X displays of ALL users
04:04
If you can read bash, I'm sure you'll be able to adjust it to your needs
04:05
I.e. you'd put a param for uid or username, and put that as a parameter to `ps`
04:05
So, how can you use the result. Either run x11vnc normally to some port and connect to the user,
04:06
or, even better, enable reverse connections to vinagre, and run `x11vnc -connect your-ip` on the client
04:06
x11vnc -noshm -connect etc for thin clients, -noshm is required
04:07
Hmm I'd better make a script for all that, when I have some free time, I already have all the code pieces...
04:08
I.e. an "ltsp-vnc user" script
04:09
<Hyperbyte>
That would be quite cool I think. =)
04:12
<vlt>
alkisg: Thank you. (Still trying to find out what's actually happening in that bash script ;-)
04:12
<alkisg>
vlt: basically if you have the user's xauthority and display, you can then directly run programs on YOUR account and have them displayed on the USER screen
04:13
So that bash script just gathers xauthority and display
04:13
To see which users are graphically connected, it uses the pid of dbus-daemon
04:13
As that process has xauthority and display in its /proc/pid/environ
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04:14
<alkisg>
After getting the vars, it's just a matter of exporting them, and then you can run anything and have it displayed on the user screen
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05:15
<tl1000s77>
Hello everyone.
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05:15
<tl1000s77>
Does LTSP on Ubuntu 10.04 support DISABLE_ACCESS_CONTROL ?
05:16
I can't seem to get an xmessage to pop-up on my thincients.
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05:33
<alkisg>
tl1000s77: From what I can see, it supports it in XDMCP screens, but not in normal LDM screens
05:34
<tl1000s77>
alkisg: Do you know of a way around it?
05:35
alkisg: At the end of the day, I don't really care how I get the pop-ups on the thinclients, as long as I can get them there :-)
05:36
<alkisg>
Are you interested in only logged on clients, or for clients sitting on the login screen too?
05:36
<tl1000s77>
Only logged on clients
05:36
<alkisg>
Strange, I just pasted a script for that two hours ago :D
05:37
http://paste.ubuntu.com/634950/
05:38
Usually you can also use zenity, it's better than xmessage
05:38
(sudo) ltsp-exec zenity etc
05:38
(i.e. save that script as ltsp-exec)
05:39
<tl1000s77>
Is that script from from the LTSP server or can I run it from any linux server?
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05:39
<tl1000s77>
^run
05:39
<alkisg>
It needs to be ran from the ltsp server (or some thin client logged on to it)
05:40
It doesn't need X though, so I guess you can just ssh to the server
05:41
<tl1000s77>
Great. I'll give it a try. I think I'm going to have to modify it so that it takes some arguments so that I can send the message to one specific user.
05:42
<alkisg>
Feel free to post back any modifications
05:42
<tl1000s77>
Will do
05:42* alkisg doesn't use it, he has a nice gui app instead
05:44
<alkisg>
Btw if you end up using it for more than just a dialog, you might want to set the DBUS_SESSION_BUS_ADDRESS environment variables too, so that apps that rely on dbus can work
05:57Nick change: Parker955_Away -> Parker955
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06:34
<Hyperbyte>
Gadi! :>
06:35
Hi!
06:35
<Gadi>
good morning
06:35
<Hyperbyte>
Afternoon. :)
06:36
<Gadi>
you say tomato, I say tomato
06:36
:)
06:37TheMatrix3000 (~TheMatrix@rrcs-70-61-255-226.central.biz.rr.com) joined #ltsp.
06:37
<TheMatrix3000>
is gnome-watchdog still useful?
06:37Gremble (~Ben@cpc12-aztw24-2-0-cust146.aztw.cable.virginmedia.com) joined #ltsp.
06:38
<Hyperbyte>
Gadi, now you're just comparing apples and oranges. :)
06:43
<TheMatrix3000>
I have 11.04 installed on my ltsp installed firefox and the flashplugin-installer
06:44
as a local app, but when i try to go to youtube, it does not work
06:44
it says movie not loaded
06:44
im on Ubuntu 11.04 x64
06:44
and the pxe image is i386
06:53pedronveloso (~pedro@140.108.54.77.rev.vodafone.pt) joined #ltsp.
06:54
<pedronveloso>
how can I share a USB scanner that's connected to the server? I've verified that it works on the server with xsane
07:02
<Hyperbyte>
TheMatrix3000, type about:plugins in the address bar. It'll tell you what plugins it has loaded.
07:03
<TheMatrix3000>
its loaded
07:03
<Hyperbyte>
pedronveloso, are you running a localapp on the client that requires the scanner?
07:03
<TheMatrix3000>
just not loading the video
07:04
<pedronveloso>
Hyperbyte, no, xsane and ubuntu's "simple scanner" run from ltsp server
07:05
<Hyperbyte>
pedronveloso, then why do you need to share the scanner? If the scanner is connected to the server, and "simple scanner" software runs on the server... ?
07:06
TheMatrix3000, what about non-video content? http://www.adobe.com/software/flash/about/ Do you see the flash content on that site?
07:06
<pedronveloso>
but since it is connected trough usb.. Humm, I'm gonna try rebooting the client
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07:07
<Hyperbyte>
pedronveloso, the scanner is connected to the server, right, not the client?
07:07
And the software that uses the scanner runs on the server, right, not the client?
07:07
Because if that's the case, the client, nor LTSP, have anything to do with this.
07:07
Try running the scan software locally on the server, without LTSP, see if it works then.
07:08
<pedronveloso>
I0m rebooting, but strangely it didn't work on my first try, but then again I installed the scanner with the clients already on
07:08
Hyperbyte, yes, locally it does wok
07:08
I'm just using 1 local app, and that is Firefox
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07:13
<Gadi>
pedronveloso: if the scanner is plugged into the thin client, you should add SCANNER=True to lts.conf for that client
07:13
<TheMatrix3000>
one second
07:13
restarting the thin client
07:15
<pedronveloso>
Gadi, no, it's connected to the server. but it's not showing up on the clients. can this have something to do with giving users permissions or anything like that?
07:15
<Gadi>
yeah, the users need to be in a group (on Ubuntu)
07:16
the "scanner" group
07:16
<pedronveloso>
Gadi, what group would that be?
07:18
<TheMatrix3000>
Hyperbyte: yea, shockwave flash and futuresplash player are installed
07:18
im trying that site you gave me now
07:18
Hyberbyte: it does not work
07:19
is it because im on x64 server and image is i386
07:19
and maybe the i386 image chroot install somehow installed the x64 version?
07:19
or what
07:20
http://screencast.com/t/qKIjZPeEIt'
07:20
http://screencast.com/t/qKIjZPeEIt - that is the screenshot
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07:21
<pedronveloso>
arrrrg.. why is scanner not being available to the thin clients? :P
07:25
<alkisg>
And it's available where? If you sit on the server directly?
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07:25
<Hyperbyte>
TheMatrix3000, that screenshot shows me nothing more than you've already told me - it doesn't work. More interesting would be to see the output of 'about:plugins'
07:25
(pastebin it somewhere)
07:26
<TheMatrix3000>
ok one second
07:27
http://screencast.com/t/g3xdykqNBKvL
07:30
<Hyperbyte>
Okay, then it's time to make sure the libflashplayer.so is compatible with your architecture yeah, if it's not a 64-bit plugin
07:30
<Gadi>
TheMatrix3000: http://www.longtailvideo.com/support/forums/jw-player/setup-issues-and-embedding/10152/movie-not-loaded-problem
07:31
<TheMatrix3000>
yea, but client image is 9386
07:31
i386*
07:31
and firefox is a localapp
07:31
<Gadi>
is the movie larger than the available RAM on the client?
07:32
or is the URI for the movie incorrect?
07:32
try a different video
07:32
<Hyperbyte>
Gadi, URI isn't incorrect. It also happens for him on the Adobe site.
07:33
TheMatrix3000, is the home dir properly mounted on the client, and is it writable? It could also be that Firefox isn't able to save temporary files to feed into the flashplayer plugin
07:33
<Gadi>
right
07:33
<mgariepy>
did you try to run firefox from a xterm to see it something is missing ?
07:33
<Gadi>
check /tmp on the client, too
07:34
<pedronveloso>
alkisg, Scanner it's available on the server, ubuntu 10.04. And works perfectly on the server
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07:34
<pedronveloso>
alkisg, but not on the clients. on those it says like "scanner not available" :\
07:35
<Gadi>
pedronveloso: open a terminal window as the user on the client and type: env|grep SANE
07:37
<pedronveloso>
I'm following this tutorial : https://help.ubuntu.com/community/ScanningHowTo , let's see how it goes
07:39
<alkisg>
pedronveloso: when you're sitting on thin clients, you ARE on the server. Are you trying with the same user account?
07:40
E.g. if you tried with "admin" on the server, try logging as "admin" on the client too
07:40
Unless you're using something else, e.g. fat clients or localapps
07:41
Gadi: did I miss any of your use cases in the xfreerdp script?
07:43
<pedronveloso>
alkisg, I'm running Firefox as a local app. Would that matter for the scanner?
07:44
alkisg, the admin on the thin client can't see the scanner as well :\
07:45
alkisg, do I have to configure saned, or something like that?
07:45
btw, lsusb returns : Bus 002 Device 003: ID 04b8:082f Seiko Epson Corp. Stylus DX4050
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07:47
<alkisg>
What does `scanimage -L` return on each case? (server/thin)
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07:51
<pedronveloso>
on server : scanimage -L
07:51
device `epson2:libusb:002:003' is a Epson CX4000 flatbed scanner
07:54
<TheMatrix3000>
home directories are all nfs
07:54
the /home is from an nfs mount
07:55
all users have the correct permissions relative from their home directory
07:55
should i mount it locally as well
07:56
like do a sudo mount -t nfs servername:/home/$USER /home/$USER
07:56
like an RC script
07:56
will that mount the nfs share to the local client?
07:57
maybe video driver?
07:57
cause if i move the browser fast
07:57
then it works
07:57
well not really works
07:57
but shows an image
07:58
its all scrambled and stuff tho
07:58
http://screencast.com/t/I8TQrmgE
07:58
<pedronveloso>
alkisg, but scanimage -L on client says it does not found any device. however "sane-find-scanner" finds the USB reference on the client
07:59
alkisg, but it's only the vender and product ID, it doesn't resolve the name, and on the client it does. very strange
07:59
<Hyperbyte>
On the server it does, you mean?
07:59
<pedronveloso>
Hyperbyte, yes, I meant on the server it does, hehe, sorry :P
08:00
<alkisg>
pedronveloso: and what's the output of `id` on the client?
08:00
<Gadi>
alkisg: yes, but there is one problem you havent addressed: many xfreerdp command-line options require a "--" that will interfere with the "--" in the xinit line, I believe
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08:01
<alkisg>
Gadi: how was this addressed before? And, why not use RDP_OPTIONS in that case?
08:03
<Gadi>
alkisg: rdesktop does not have such options
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08:03
<Hyperbyte>
TheMatrix3000, I'm out of ideas then. Video driver could be a possibility. I'd start firefox from an xterm, where you can find more debug messages hopefully.
08:03
<alkisg>
Ah, so it wasn't addressed before either. OK, won't RDP_OPTIONS do the job in those cases? Or should we special-case "--" and handle it in xinitrc?
08:04
<Gadi>
alkisg: like: xfreerdp --plugin rdpdr --data a:b:c --
08:04
the '--' at the end will confuse xinit
08:04
<alkisg>
RDP_OPTIONS="--plugin rdpdr --data a:b:c --"
08:04
That won't confuse it...
08:04
<TheMatrix3000>
should i install xterm on the thinclient image
08:04
<Gadi>
are you sure?
08:04
<Hyperbyte>
TheMatrix3000, it already is.
08:04
<alkisg>
Hmmm or not? Let me see...
08:05
<Hyperbyte>
TheMatrix3000, ltsp-localapps xterm
08:05
<Gadi>
brb
08:05
<pedronveloso>
alkisg, "found USB scanner (vendor=0x04b8, product=0x082f) at libusb:002:003" <- on the client with "sane-find-scanner"
08:06
alkisg, "found USB scanner (vendor=0x04b8 [EPSON], product=0x082f [USB MFP]) at libusb:002:003
08:06
" <- on the server
08:07
<alkisg>
pedronveloso: still waiting for the output of `id`
08:07
On both the server and the client
08:07
<pedronveloso>
alkisg, like, lsusb ?
08:08
<alkisg>
No, this command, with 2 letters: id
08:08
<pedronveloso>
alkisg, oh.. the user id :P
08:08
<alkisg>
Gadi: yeah you're right, let's think about that...
08:08
<pedronveloso>
alkisg, I though it was some other ID XD. server : uid=1000(emerge) gid=1000(emerge) groups=4(adm),20(dialout),24(cdrom),46(plugdev),104(fuse),105(lpadmin),119(admin),122(sambashare),1000(emerge)
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08:10
<TheMatrix3000>
Adobe Flash Player error: could not load cURL library
08:11
<Hyperbyte>
TheMatrix3000, Google that. :) There are some helpful results there I think.
08:12
<pedronveloso>
alkisg, client ID: uid=1000(emerge) gid=1000(emerge) grupos=4(adm),20(dialout),24(cdrom),46(plugdev),104(fuse),105(lpadmin),119(admin),122(sambashare),1000(emerge),1012(isu)
08:12
<Hyperbyte>
Google for "could not load cURL library" ubuntu flash
08:12
<TheMatrix3000>
yep
08:12
<pedronveloso>
alkisg, also, I noticed that with sudo I can see the scanner on the client
08:12
<TheMatrix3000>
its a 64bit thing
08:12
<mgariepy>
install libcurl3-gnutls
08:12
<TheMatrix3000>
how do i force install of the i386 into the thin client image
08:12
<pedronveloso>
alkisg, but of course normal users should not have sudo in the system :\. how do I fix this?
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08:13
<alkisg>
pedronveloso: so, let's recap. If you login as emerge on the client, do you see the scanner? Because above you said that you couldn't.
08:13
<Hyperbyte>
TheMatrix3000, I don't agree it's a 64-bit thing. 64-bit flash plugin should not load on 32-bit Firefox or 32-bit processor, not display these results.
08:13
mgariepy has wisdom.
08:13
<TheMatrix3000>
ah ok
08:13
so just do a libcurl3-gnutls install
08:14
like mgariepy said
08:14
<Hyperbyte>
In the client chroot, naturally.
08:14
<pedronveloso>
alkisg, if I login as emerge on client, scanimage -L cannot see the scanner. however on the server it does. but if I do sudo scanimage -L on the client, then I can see the scanner
08:14
<TheMatrix3000>
yep
08:14
it was missing
08:14
ok rebuilding image now
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08:16
<alkisg>
pedronveloso: that's indeed very strange, I wonder if it's policykit related. I can't test now, wait to see if someone else can help you.
08:17
<pedronveloso>
alkisg, ok. thanks for the help anyway ;)
08:19
<TheMatrix3000>
awesome
08:19
flash is working now
08:19
thank you for your help
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08:34
<tl1000s77>
alkisg: I ended up creating an "I" rc script in /opt/ltsp/i386/usr/share/ldm/rc.d and that fixed the whole xhost issue I was having.
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08:35
<tl1000s77>
alkisg: Thanks though :-)
08:36
<alkisg>
tl1000s77: sure - it's just a security problem, anyone having access to anyone's xserver..
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08:36
<tl1000s77>
alkisg: I know...but I did limit it to only the two servers that need to send out xmessages.
08:37
<alkisg>
tl1000s77: in ltsp, all the users work on the server. But np, whatever works for you.
08:38
Ah you meant that you're using a non-ltsp client to send the messages. Ok
08:38
<tl1000s77>
Yes, it's another linux server that's running a script to see if a job is coming up, if so, it sends the user a reminder that they have something to do :)
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08:53
<alkisg>
!time
08:53
<ltsp>
alkisg: 05:53 PM, June 29, 2011
08:54
<alkisg>
Gadi: assuming that we don't want to break commands with spaces or '' in parameters, then "--" can only be handled by our ltsp/xinitrc script... maybe with some new lts.conf variable like XINIRC_EXTRA_PARAMETERS, which will only be used in the -- case...
08:54
I don't like it though, it's too hacky
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08:56
<pedronveloso>
alkisg, fixed scanner problem. I made /dev/bus/usb... to the device availble to all users. it was owned by root, and was with some restrictive permissions to others. will now do a cron job to fix permissions so that I know this don't revert
08:56
<alkisg>
pedronveloso: you can do that with an udev rule
08:56
With udev, you can set specific permissions for specific devices
08:57
<pedronveloso>
alkisg, considering it's /dev/bus/usb/002/003 and lsusb is : 04b8:082f, what would the udev rule be like?
08:58
alkisg, I understand the purpose of udev, just not how to set it properly :X
08:58
<alkisg>
Can't really test right now, you can try googling for udev rules
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08:59
<Gadi>
alkisg: I have an xfreerdp screen script where I started setting options using other params, for that reason - though it is more hardcoded
08:59
so, for example, if $LOCALDEV is true, then pass these hard-coded options
09:00
that sort of thing
09:00
but, I also did it in an external script
09:00
that the screen script calls
09:00
(which is why rdesktop.sh was created as a separate script when the pulseaudio stuff was added)
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09:03
<alkisg>
Gadi, what rdesktop.sh did, could also be done from xinitrc
09:03
As it's a general problem, not rdesktop specific
09:04
So e.g. xfreerdp can set XINIRC_EXTRA_PARAMETERS="RDP_OPTIONS"
09:04
(so that the user doesn't have to set XINITRC_EXTRA_PARAMETERS, the rdesktop script does it for him)
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09:05
<Hyperbyte>
HAH
09:05
:)
09:05
!time
09:05
<ltsp>
Hyperbyte: 04:05 PM, June 29, 2011
09:05
<alkisg>
Nice :
09:05
:)
09:05
<Hyperbyte>
All via crontab
09:07
<alkisg>
Gadi: So, xfrerdp does:
09:07
XINITRC_EXTRA_PARAMETERS="$RDP_OPTIONS $RDP_SERVER"
09:07
exec xinit $xinitrc "$basename" "$@" -- "$DISPLAY" "vt${TTY}" $X_ARGS
09:07
And ltsp/xinit does: exec "@" XINITRC_EXTRA_PARAMETERS
09:07
(forgot a $ there). Does it sound OK?
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09:08
<alkisg>
That makes RDP_OPTIONS and $RDP_SERVER not accept parameters with spaces. So one can have spaces in SCREEN_XX="rdesktop params" but not in $RDP_OPTIONS
09:08
(I mean, parameters that contain spaces)
09:09
Hyperbyte: we have 4 ltsp bots now?!
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09:10
<alkisg>
(in the user list - maybe they'll go away on timeonut)
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09:35
<alkisg>
Let's see if the bot stays up for a looong time now.... :)
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11:38
<TheMatrix3000>
haha
11:38
!crash
11:38
<ltsp>
TheMatrix3000: Error: "crash" is not a valid command.
11:38
<TheMatrix3000>
lol
11:38
looks like it will stay up forever
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12:00
<komputes>
alkisg: dunno if you remember the convo from this weekend, but rebuilding the image was needed and corrected my issue
12:00* alkisg needs a small hint to remember the case
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12:56
<TheMatrix3000>
anyone know a good keylogger for ltsp
12:56
or where should the keylogger be installed...on the server, or on the client image
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13:07
<kusznir>
Hi all: quick easy question: on ubuntu 11.04 ltsp server, how do I disable unity for all users so they don't get the "sorry, your hardware does not support unity" pop-up on every login?
13:07
!disable-unity
13:07
<ltsp>
kusznir: Error: "disable-unity" is not a valid command.
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13:10
<alkisg>
komputes: ah, about X_CONF, yes, every time you put something to /opt/ltsp/i386, then you need to update the image
13:11
<TheMatrix3000>
where should the a keylogger be installed...on the server, or on the client image
13:16
<Parker955>
install it on the client image and see what happens
13:16
if it doesn't work put it on the server :p
13:16
<mgariepy>
lol
13:16
<Parker955>
it seems like it could work on each tho if you ask me
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13:29
<TheMatrix3000>
yea, i just don't know how to run a script to auto start this
13:29
RCSCRIPT_01 right?
13:29
what what is it
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13:36
<TheMatrix3000>
where would I put a script to run this upon user login
13:37
logkeys --start --keymap=/keylog/custom_key.map --output=/keylog/$USER/I/custom.log --device=event4
13:37
it an app on the local machine
13:38
so maybe I would need to run ltsp-localapps logkeys --start --keymap=/keylog/custom_key.map --output=/keylog/$USER/I/custom.log --device=event4
13:47
<Hyperbyte>
!lts.conf
13:47
<ltsp>
Hyperbyte: lts.conf: http://manpages.ubuntu.com/lts.conf.
13:47
<Hyperbyte>
RC_FILE + number I believe
13:47
Read that manpage. Those scripts are ran on the client on login
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00:00--- Thu Jun 30 2011