[SLUG] SyPy Aug 5th: Scripting real time 3D simulations - Mycosm Studio - Jeff Cotter + lightning talks + social sypy
RSVP via http://anyvite.com/x5jz2ygcez 6:15: Arrive and enjoy munchies provided by Google Australia 6:30: Five minute lightning talks (open to all) 6:45 Main Talk - Scripting real time 3D simulations - Mycosm Studio - Jeff Cotter 8:00 Social networking and beers and dinner at the Harlequin Inn. Scripting real time 3D simulations - Mycosm Studio: This talk will give an overview of mycosm and it's embedded pythondevelopment environment that allows you to create real-time highfidelity 3D visualizations and simulation. Mycosm uses Python to notonly script behaviour, control, and interaction with external programsbut also as a means of fundamentally constructing the 3D environment. We will go through some practical examples of programming mycosm anddiscuss it's potential uses. We will also discuss the advantages ofthe choice of python for this product. Jeff Cotter: Jeff has an impressive record of innovation and software project management. As the head software engineer for Electro Optic Systems Pty Limited (EOS) he was instrumental in the design and development for the EOS Satellite Laser Ranging (SLR) facilities in Japan and Australia. He was also the head software engineer behind the development of the software systems for: • A remotely controlled telescope observatory facilities for NASA (KECK observatory in Hawaii) • An astronomical observatory at the Indian Institute of Astrophysics (India); • The Western Kentucky University telescope facility in the USA. One of Jeff's more significant projects was design and development of the software for operating the World's first optical space surveillance facility at Mt Stromlo for the tracking of space debris in Earth orbit. The software that Jeff and his team developed was integral to the operation of this facility which has successfully tracked debris as small as 10cm at over 2000km/h in space. This project was commissioned by the US Air Force and the Australian Department of Defence with the objective of implementing over 50 such facilities globally to track every piece of debris in the Earth's orbit. Jeff's innovative skills and excellent design skills formed the basis for invention and development of the Simurbansoftware suite, now widely acknowledged as one of the most advanced 3D Direct X based visualisation engines in the world. Since mid 2007, Jeff has led the RD for Mycosm - the company's hi- fidelity multiplayer 3D simulation technology platform. Further Details: We will also have slots for 5 minute lightning talks. If you think its interesting and you're a pythonista then chances are we will to. Put together a few slides and bring it along. *RSVP: Please RSVP on Anyvite to get your name on the door* RSVP via RSVP via http://anyvite.com/x5jz2ygcez Getting There: It's a 10min walk from Town Hall station over the pyrmont bridge (directions http://tinyurl.com/nedz98) or catch the light rail to the casino station. Go to level 5 or if the doors are locked wait outside and look for smiley happy google people to let you in. Free free to join us at the pub after/instead. Upstairs at the Harlequin Inn 152-156 Harris St, Pyrmont (http://bit.ly/81rLtH). The Harly has cheapish thai/burgers available for dinner. If have any problems call Dylan Jay on 0421477460 --- Dylan Jay Plone Solutions Manager. www.pretaweb.com P +612 80819071 M +61421477460 skype - dylan_jaytwitter - djay75 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Multiple server roles on one box
dave b db.pub.m...@gmail.com writes: On 29 July 2010 14:40, Daniel Pittman dan...@rimspace.net wrote: dave b db.pub.m...@gmail.com writes: On 28 July 2010 12:23, Matthew Hannigan m...@zip.com.au wrote: On Tue, Jul 27, 2010 at 04:04:05PM +1000, Ben Donohue wrote: [ ] How about a DNS, squid and web server with multiple name based virtual domains on the same box? Is doing the above really dangerous on a fully patched and up to date system? lso depends on the webapp. I'd be more comfortable with java (especially with security manager on) which is after all another form of vm. Java is like php, there are also language flaws coming out to bite you real soon. /me mutters something about OH MY THEY ESCAPED FROM THE JVM. Do you have a reference for that? Here is a recent example :) http://blog.cr0.org/2009/05/write-once-own-everyone.html You can finder older examples as well :) Thanks. That saves me searching around to try and find the same information myself. :) ...but why? What actual security value does that add, compared to the vanilla kernels which do, oh, everything listed in their bullet point feature list, and out of the box covers over eighty percent of them? Good :) - but not chroot break out prevention, further aslr improvements etc. Mmmm. Most of the non-merged features are the ones that are fairly heavily disputed WRT security value, though, are they not? Anyhow, actually telling people why you recommended this was my core point, not to argue about the actual value of the individual items, so if you don't feel super-enthused about responding neither do I. :) Pro tip: asserting that an RBAC system will increase security is silly without actually understanding how it will be used; people can do things just as badly with RBAC as without. Sure, but grsecurity also has some other features :) That was a subset list of the issues, but a fair response to what I wrote. ;) Daniel -- ✣ Daniel Pittman✉ dan...@rimspace.net☎ +61 401 155 707 ♽ made with 100 percent post-consumer electrons -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Multiple server roles on one box
On Thu, Jul 29, 2010 at 04:28:23PM +1000, Daniel Pittman wrote: dave b db.pub.m...@gmail.com writes: soon. /me mutters something about OH MY THEY ESCAPED FROM THE JVM. Do you have a reference for that? Here is a recent example :) http://blog.cr0.org/2009/05/write-once-own-everyone.html You can finder older examples as well :) Thanks. That saves me searching around to try and find the same information myself. :) I like this one that Dave gave me on irc: http://www.securiteam.com/securitynews/5YP381520Y.html It's not a breakout, but it's a way of compromising a server jvm, which then (at least potentially) lets you use the breakout techniques on that jvm. So yeah everything suggested here is incremental security and only gives brittle shells of isolation. Here's another measure: mod_security (http://www.modsecurity.org/) You should also follow recommendations such as give at the Open Web Application Security Project (http://www.owasp.org/) -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Reply-to address on SLUG posts
On 27/07/2010, at 2:08 PM, Jon Jermey wrote: I've been caught by that a few times, mainly because this is the only mailing list I currently subscribe to (out of a dozen or so) that doesn't automatically set the reply-to address to the list. I have a vague memory of this issue being raised before, and I'm sure there were good reasons given why that was the case. But I still find it really annoying. Is there any support for a re-think on this? http://www.slug.org.au/mailinglists.html#q9 -Chris.-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Weird X/Gnome issue
Hi all, I have an laptop with a native resolution of 1280x800 running Debian testing with a Gnome desktop. When I power up the machine, the login screen comes up correctly at 1280x800 resolution, but when I login it switches to 1024x767 for no good reason. I have to run xrandr -s 1280x800 Any clues to fixing this? Erik -- -- Erik de Castro Lopo http://www.mega-nerd.com/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Weird X/Gnome issue
Gnome display settings are perhaps overriding the x config. If all else fails, try creating another user and logging in? Dean On 29/07/2010, at 7:22 PM, Erik de Castro Lopo mle+s...@mega-nerd.com wrote: Hi all, I have an laptop with a native resolution of 1280x800 running Debian testing with a Gnome desktop. When I power up the machine, the login screen comes up correctly at 1280x800 resolution, but when I login it switches to 1024x767 for no good reason. I have to run xrandr -s 1280x800 Any clues to fixing this? Erik -- -- Erik de Castro Lopo http://www.mega-nerd.com/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Weird X/Gnome issue
Dean Hamstead wrote: Gnome display settings are perhaps overriding the x config. Well this is the new Xorg (current Debian/Ubuntu) where resolution is not really specified anywhere. If all else fails, try creating another user and logging in? Tried this. The new account does the right thing and the old one doesn't, with no idea what the difference is. I have grepped $HOME/.gconf/ $HOME/.gnome2/ and $HOME/.gnome2_private/ for the string 1024 and found nothing display related. Erik -- -- Erik de Castro Lopo http://www.mega-nerd.com/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Re: [activities] Re: Discussion about SLUG meetings and format
On 24 July 2010 05:45, Michael K mjkor...@optusnet.com.au wrote: Marghanita da Cruz wrote: I hope this doesn't come across the wrong way, but I want you to know that long ago when I was on the committee for SLUG, I made a serious offer to assist with managing the website and content, since at the time I was attending the website design course at Granville. Nobody ever followed up with me about this, so I didn't pursue it since I had the distinct impression nobody was taking me seriously. Of course, my membership of SLUG lapsed long ago and I haven't been to a meeting since the venue changed from UTS, since I live in Bankstown, and am restricted to public transport. I don't wish to become engaged in any flaming, even though I feel there are several things SLUG could do to improve it's public profile. All I want to say is that the offer is still there to help out if you wish to contact me. I imaging much of the admin could be done off-site, and since I am still currently not working, I have plenty of free time. Anyway, if you think I can be of some help, please feel free to contact me. Before anyone responds to this, I want to be first to say that the Linux community are the hardest working group of trade professionals I have seen in my professional career, let alone my natural life span. In my experience with these people, I have found them to be the most accommodating, even when the pressure is on, and the guests are misbehaving. It is unwise for you to accuse them of not taking you seriously. Please be aware that since UTS have removed the pro-bono rental of their room for this community, we have been hard pressed finding places that were able to accommodate us, as we jumped from venue to venue. These locations were within the CBD but the distances between them were sparse. The employee culture does not work so well for the Linux community. Many of the people involved are contractors, some with their own companies. Work is allocated on a best offer basis. It is inefficent to assign complex tasks to people and properly assess their suitability for said task. Participants are expected to use their own discretion and assign their own tasks, based on the goals of the community. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Weird X/Gnome issue
On Thu, Jul 29, 2010 at 08:23:49PM +1000, Erik de Castro Lopo wrote: I have grepped $HOME/.gconf/ $HOME/.gnome2/ and $HOME/.gnome2_private/ for the string 1024 and found nothing display related. Can you strace your Window Manager to find out what files it reads? I know it could take a long time to figure out... Nick. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Task bar not working
On Thu, 2010-07-22 at 21:17 +1000, Chris Allen wrote: I am using Ubuntu 10.4 Since yesterday my task bar (@ bottom of Gnome screen) has been unworkable. It is still there but is always black on black. When I minimise a window, I see it shrink and disappear into the task bar but after that I see no trace of it. It almost impossible to recall it again from the task bar. Is there any explanation / fix for this? I've seen this happen on my wife's laptop twice, with NVidia drivers and compositing turned on. Seems to be a NVidia bug to me. Turning off compositing and turning it back on again fixes it, or rebooting. These commands will disable and then reenable metacity compositing: gconftool -s /apps/metacity/general/compositing_manager -t bool false gconftool -s /apps/metacity/general/compositing_manager -t bool true - Jan. -- Jan Schmidt thay...@noraisin.net -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Reply-to address on SLUG posts
I'm still not convinced. The fact that millions of people using thousands of lists manage to cope successfully with Reply-to-list indicates that it can't be TOO harmful. I have never used Elm and never want to (though on reflection. I may have flirted with it back in 1979 or thereabouts). And the risk of sending one very occasional private message to the list is more than offset by the inconvenience of having to stop and think each time I DO want to send a message to the list. If the SLUG list dealt with sensitive and personal material then I might be swayed. But I've seen nothing posted there so far that my reply to couldn't be broadcast to my mother or Senator Conroy with total impunity. I see the decision as analogous to deciding to drive on the right side of the road when everyone else is driving on the left. There's nothing inherently wrong with it, but it causes a lot of inconvenience. To me, anyway. Jon. On 29/07/10 18:48, Chris Deigan wrote: On 27/07/2010, at 2:08 PM, Jon Jermey wrote: I've been caught by that a few times, mainly because this is the only mailing list I currently subscribe to (out of a dozen or so) that doesn't automatically set the reply-to address to the list. I have a vague memory of this issue being raised before, and I'm sure there were good reasons given why that was the case. But I still find it really annoying. Is there any support for a re-think on this? http://www.slug.org.au/mailinglists.html#q9 -Chris.-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Reply-to address on SLUG posts
I agree. Another point is the slug list exposes every posters email address to anyone subscribed to the list. Want to harvest email addresses? Just subscribe to the list, you don't even need to post. After a while you can just have a script troll through the message headers. I'm pretty sure I've eneded up on spam lists because of this. I created an email address and used it only to subscribe to slug. How did the spammers find it? It also plays havoc with white lists. Pete. Jon Jermey wrote: I'm still not convinced. The fact that millions of people using thousands of lists manage to cope successfully with Reply-to-list indicates that it can't be TOO harmful. I have never used Elm and never want to (though on reflection. I may have flirted with it back in 1979 or thereabouts). And the risk of sending one very occasional private message to the list is more than offset by the inconvenience of having to stop and think each time I DO want to send a message to the list. If the SLUG list dealt with sensitive and personal material then I might be swayed. But I've seen nothing posted there so far that my reply to couldn't be broadcast to my mother or Senator Conroy with total impunity. I see the decision as analogous to deciding to drive on the right side of the road when everyone else is driving on the left. There's nothing inherently wrong with it, but it causes a lot of inconvenience. To me, anyway. Jon. On 29/07/10 18:48, Chris Deigan wrote: On 27/07/2010, at 2:08 PM, Jon Jermey wrote: I've been caught by that a few times, mainly because this is the only mailing list I currently subscribe to (out of a dozen or so) that doesn't automatically set the reply-to address to the list. I have a vague memory of this issue being raised before, and I'm sure there were good reasons given why that was the case. But I still find it really annoying. Is there any support for a re-think on this? http://www.slug.org.au/mailinglists.html#q9 -Chris.-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Weird X/Gnome issue
Nick Andrew wrote: On Thu, Jul 29, 2010 at 08:23:49PM +1000, Erik de Castro Lopo wrote: I have grepped $HOME/.gconf/ $HOME/.gnome2/ and $HOME/.gnome2_private/ for the string 1024 and found nothing display related. Can you strace your Window Manager to find out what files it reads? From grepping I'm pretty sure its not reading it from a file. Erik -- -- Erik de Castro Lopo http://www.mega-nerd.com/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Re: [activities] Re: Discussion about SLUG meetings and format
There was a discussion at the last slug meeting about the calendar/event scheduling. I am interested to know what the issues would be in integrating a calendar/event booking into a wiki, for example the slug wiki. Anyone care to give a lightning minute talk on their views on this at tonight's SLUG meeting? http://wiki.slug.org.au/julylightningtalks#talks_i_d_like_to_see Also, further to my proposed talk, http://wiki.slug.org.au/julylightningtalks, it appears there is a new open media project - that I would like to hear more about. http://www.webmproject.org/ ...and, clarifying the comments quoted in Andrew's last email, http://lists.slug.org.au/archives/slug/2010/07/msg00129.html which appeared to be mine were made by Michael K in a response to an email from me to the activities list. # [activities] Notes from Future of SLUG discussion on May 28/Agenda for June 25 o Marghanita da Cruz 09:09, Wed Jun 02 http://lists.slug.org.au/archives/activities/2010/06/msg00011.html # Re: [activities] Re: Discussion about SLUG meetings and format * Michael K 05:45, Sat Jul 24 http://lists.slug.org.au/archives/activities/2010/07/msg3.html Marghanita Andrew Sinclair wrote: On 24 July 2010 05:45, Michael K mjkor...@optusnet.com.au wrote: snip -- Marghanita da Cruz http://ramin.com.au Tel: 0414-869202 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Weird X/Gnome issue
Ubuntu has an option in the menus: System, Preferences, monitors. (gnome-display-properties program) Might help On Thu, Jul 29th, 2010 at 7:22 PM, Erik de Castro Lopo mle+s...@mega-nerd.com wrote: Hi all, I have an laptop with a native resolution of 1280x800 running Debian testing with a Gnome desktop. When I power up the machine, the login screen comes up correctly at 1280x800 resolution, but when I login it switches to 1024x767 for no good reason. I have to run xrandr -s 1280x800 Any clues to fixing this? Erik -- -- Erik de Castro Lopo http://www.mega-nerd.com/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] making ip adress stick rather than DHCP
I have am old clunker with Centos 5.x, it appears it developed NIC probs, couldn't reach it, when screen plugged in, screen blank on power up, it gave some eth0 messages; I removed the 3COM PCI NIC, starred at it for a while whilst nodding my head, then, put it back in machine booted OK, BUT, is now on DHCP address, not what it was, fixed IP I've 'ifconfig eth0 192.168.1.5' ; 'route add -net...' that returned it desired IP OK, but, on reboot, it reverts to DHCP what do I need to make it stick ? (tried editing some /etc/sysconfig files, but, it was telling something about hardlinks, so I didn't) -- Voytek -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] making ip adress stick rather than DHCP
Voytek Eymont li...@sbt.net.au writes: I have am old clunker with Centos 5.x, it appears it developed NIC probs, couldn't reach it, when screen plugged in, screen blank on power up, it gave some eth0 messages; I removed the 3COM PCI NIC, starred at it for a while whilst nodding my head, then, put it back in. machine booted OK, BUT, is now on DHCP address, not what it was, fixed IP Strange; I would almost guess that it automatically reconfigured it or something on boot, which is rather strange... I've 'ifconfig eth0 192.168.1.5' ; 'route add -net...' that returned it desired IP OK, but, on reboot, it reverts to DHCP what do I need to make it stick ? Edit the network settings in /etc/sysconfig to set it with a fixed address rather than DHCP. Possibly use the RH GUI tool rather than the command line, if you prefer, to do it for you. :) (tried editing some /etc/sysconfig files, but, it was telling something about hardlinks, so I didn't) I got nothing. :) Daniel -- ✣ Daniel Pittman✉ dan...@rimspace.net☎ +61 401 155 707 ♽ made with 100 percent post-consumer electrons -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] making ip adress stick rather than DHCP
Hi Voytek, edit /etc/sysconfig/ifcfg-eth0 Get it to look something like the following... # Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] DEVICE=eth0 BOOTPROTO=none BROADCAST=10.1.2.255 IPADDR=10.1.2.250 IPV6INIT=yes IPV6_AUTOCONF=yes NETMASK=255.255.255.0 NETWORK=10.1.2.0 ONBOOT=yes GATEWAY=10.1.2.253 TYPE=Ethernet PEERDNS=yes USERCTL=no if there is a line in there with HW= or HWARE= with a mac address like 2B:3C:F2:... you can remove it without any dramas. Ben On 30/07/2010 12:26 PM, Voytek Eymont wrote: I have am old clunker with Centos 5.x, it appears it developed NIC probs, couldn't reach it, when screen plugged in, screen blank on power up, it gave some eth0 messages; I removed the 3COM PCI NIC, starred at it for a while whilst nodding my head, then, put it back in machine booted OK, BUT, is now on DHCP address, not what it was, fixed IP I've 'ifconfig eth0 192.168.1.5' ; 'route add -net...' that returned it desired IP OK, but, on reboot, it reverts to DHCP what do I need to make it stick ? (tried editing some /etc/sysconfig files, but, it was telling something about hardlinks, so I didn't) -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] making ip adress stick rather than DHCP
On Fri, July 30, 2010 2:24 pm, Ben Donohue wrote: edit /etc/sysconfig/ifcfg-eth0 Get it to look something like the following... # Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] DEVICE=eth0 BOOTPROTO=none BROADCAST=10.1.2.255 IPADDR=10.1.2.250 IPV6INIT=yes IPV6_AUTOCONF=yes NETMASK=255.255.255.0 NETWORK=10.1.2.0 if there is a line in there with HW= or HWARE= with a mac address like 2B:3C:F2:... you can remove it without any dramas. Ben, Daniel, thanks, I'll have another go later I guess I need to disable dhclient, is that what caused the problem ? # ps ax | grep dhclient 1807 ?Ss 0:00 /sbin/dhclient -1 -q -lf /var/lib/dhclient/dhclient-eth0.leases -pf /var/run/dhclient-eth0.pid eth0 21087 pts/0R+ 0:00 grep dhclient -- Voytek -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Weird X/Gnome issue
Erik de Castro Lopo said: When I power up the machine, the login screen comes up correctly at 1280x800 resolution, but when I login it switches to 1024x767 for no good reason. $ rm .config/monitors.xml Cheers, Jeremy. signature.asc Description: OpenPGP digital signature -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
