June 2009 - Roundtable

non-deletable directory but writable inside the directory
by Montana Quiring 30 Jun '09

30 Jun '09

Hello, I'm updating my public machine image with Ubuntu 8.04 I would like for the Desktop directory in the users home directory to be non-deletable but still allow the user to download files to that folder (the files in the Desktop folder get deleted on a reboot). Right now my work around is a script in the runtime directory that deletes all of the files in the Desktop directory and then recreates and chowns it (in case it's been deleted). Assigning the directory the immutable bit stops it from being deleted but also doesn't allow the user to write in that folder. :( I tried all the google results I could find, but couldn't find a working solution. Any suggestions? -- -Montana Blog: http://montanaquiring.info My Friend Feed: http://friendfeed.com/antikx

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Quad core motherboards
by Mike Pfaiffer 27 Jun '09

27 Jun '09

I'm looking to pick up a quad core machine. I've been told some motherboards don't work too well with Linux and BSD. Apparently all other components work fine. The guys I was going to pick it up from said they were going to do some research on the matter and get back to me. This was early May. Looks like I'll have to walk in with a list. So the question is which motherboards work? This is a personal machine which will be retired as a server of some sort when I upgrade again in about five years or so. Also, I'd like to "one up" a friend who just picked up one about a month ago and is running it as a quad 2.5GHz machine. ;-) Later Mike

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The SPARC is dead
by Adam Thompson 19 Jun '09

19 Jun '09

http://www.itbusiness.ca/it/client/en/CDN/News.asp?sub=true&id=53588 The SPARC is dead, long live Sun... uh, I mean Oracle... *sigh* Another half-decent chip architecture bites the dust. PA-RISC. AXP. MIPS. PPC. SPARC. (OK, I know PA-RISC got rolled into IA64... which is nearly dead, itself. And PPC is still alive and well in embedded platforms; I figure IBM's POWER chips have about the same life expectancty as HP's IA64.) So when the dust settles, we'll be left with, what, x86-64 - which it'd be almost more accurate to say *happened* than was *designed*; PowerPC - carefully hidden under the hood, à la Cell processor or in millions of devices; and ARM - also carefully hidden under the hood. Have I missed anything? Are there *any* chip architectures out there other than x86 that aren't dying or dead *in the public's mind*? -- -Adam Thompson <athompso(a)athompso.net>

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Fwd: O'Reilly UG News: InsideMobile Conference--Register Now & Save $150, Create & Market Your Own Mobile Apps
by Gilbert E. Detillieux 18 Jun '09

18 Jun '09

FYI... -------- Original Message -------- Subject: O'Reilly UG News: InsideMobile Conference--Register Now & Save $150, Create & Market Your Own Mobile Apps Date: Thu, 18 Jun 2009 14:46:17 -0700 From: Marsee Henon <marsee(a)oreilly.com> If you would like to view this information in your browser, click here: http://post.oreilly.com/rd/9z1zhfmn5chu0alguc2d5pvaunn3k45l404m4fo2vdo Forward this announcement - http://post.oreilly.com/f2f/9z1zbgsn2gplal275547l6ap5dt2627dpgj51n2vvio Hi there Can you share this with your group members if you think they'll be interested? What does it take to build mobile apps on different platforms? Find out at our InsideMobile Conference, July 26 & 27--San Jose, CA. Don't wait to learn how to develop mobile apps. Mobile is a huge and growing market, ripe with opportunity. At InsideMobile in San Jose, CA, you'll learn how to develop for this field right away--not just for one device, but for all of the top frameworks, including iPhone, Blackberry, Windows Mobile, Android, and Palm webOS. Which platform is the easiest to work with? Which will give your apps the greatest exposure? Get answers at InsideMobile and network with established mobile developers. Early Bird Price: $250 for the first 100 registrations (Save $150 on the regular price of $400) What will you learn at InsideMobile? * The basics of developing on major mobile platforms * How to develop for the small screen and manage other mobile platform eccentricities * How to make money developing mobile applications * What it takes to develop for more than one platform at a time * The tools you need to be a successful mobile developer * The differences among platforms, and what makes each one unique Featured speakers include: *Francisco Diaz-Mitoma, co-founder of Tonnect Gus Holcomb, principal engineer with Twin Technologies *Phil Libin, CEO of Evernote *Giorgio Natili, Founder and Head of GNStudio *Raj Singh, Vice President of Business Development for Skyfire *Brian Fling, author of Mobile Design and Development (O'Reilly, Aug 09) *Dan Burcaw, co-founder of Push IO, LLC For more information on InsideMobile Conference, see: http://post.oreilly.com/rd/9z1zs7447fh49frcemvv7ica127d8ej42qcc5a4h288 Have a mobile topic you'd like to propose? For information on how to submit your topic, see: http://post.oreilly.com/rd/9z1z8p7gv18guh9mhfbfo6iruc6pk58i1q2h5m2e5o0 To keep up with conference news from John Wilker and Tom Ortega, see: http://post.oreilly.com/rd/9z1z1loe2i6ujneve9i594qt60p3dg8fp8pjo998gm8 If you want to develop mobile apps or learn to develop for other mobile platforms, don't miss this event. ================================================================ Marsee Henon O'Reilly 1005 Gravenstein Highway North Sebastopol, CA 95472 800-998-9938 http://post.oreilly.com/rd/9z1zstpuijfsmhf6fmf7b5he71ih9u5jt9eik3v5rt0 Follow us on Twitter at http://post.oreilly.com/rd/9z1z4trmhjpekr2e4iafq39llqrjevq61u7r6gnjhfo You are receiving this email because you are a User Group contact with O'Reilly Media. If you would like to stop receiving these newsletters or announcements from O'Reilly, send an email to marsee(a)oreilly.com. ================================================================ Forward this announcement - http://post.oreilly.com/f2f/9z1zbgsn2gplal275547l6ap5dt2627dpgj51n2vvio

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Routing questions
by Mike Pfaiffer 17 Jun '09

17 Jun '09

The set-up to the question is I picked up a decently modern wireless router to play with. I allow no connection to the internet (nothing in the WAN port). I have a couple of computers I can connect to the wired ports of the router (assign static IPs within the subnet but outside the DHCP range). These machines (both *NIX boxes) will provide services such as a web server and a mud/game server. The router will allow open access to anyone who wants to connect (I want to provide my own content for experimentation). Since I have physical control of the hardware I'm not too worried about security. Initially I'd like to be able to redirect all http traffic not bound for my web server to my web server. For example someone trying to get to Google will get my info page instead. But if someone were trying to access a different page on the same machine would still be able to connect. I've done the RTFM thing and got confused. The manual seems to dance around the issue but doesn't seem to say anything which looks to be appropriate. The firewall is used mainly to filter incoming (from the WAN port) traffic. IP filters control the outbound (to the WAN port) filtering. The routing page talks about routing requests to a specific IP outside the LAN side. Virtual servers route requests from the WAN side to a specific LAN address. The port forwarding section looked more like an extension to the firewall page. Here is what I'd like to do graphically. Rule 1: LAN requests non-192.168.X.Y web page --> Router says "You must mean 192.168.X.Y" --> Router sends traffic to 192.168.X.Y/index.html Rule 2: LAN requests 192.168.X.Y/whatever.html --> Router passes along the request to 192.168.X.Y web server The question is how can I do this? I know I've missed something, but the manual didn't seem to help. I'll admit to not checking Google, but I'm not sure what search terms to use. This ties in with the wireless questions I was asking a couple of months ago. After I get this working I'll be looking at authentication for other services and extending the range of coverage. Later Mike

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MUUG Meeting, June 9, 7:30pm -- TrustedBSD Architecture
by gedetil＠cs.umanitoba.ca 02 Jun '09

02 Jun '09

The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, June 9. The meeting topic for this month is as follows: TrustedBSD Architecture The TrustedBSD project develops advanced security features for the FreeBSD operating system. Features from TrustedBSD have also made their way into other operating systems, such as NetBSD, OpenBSD, Mac OS X, and Linux. Christian Peron is a FreeBSD security developer. He will discuss the security deficiencies in the architectures of most existing operating systems. Christian will show us the technical and architectural changes that the TrustedBSD project made to the FreeBSD operating system to enhance security. Some of the changes include separating the access control framework from the security policy, modifying the kernel to support an auditing framework, and setting up an intrusion detection system. The group holds its general meetings at 7:30pm on the second Tuesday of every month from September to June. (There are no meetings in July and August.) Meetings are open to the general public; you don't have to be a MUUG member to attend. ********************************************************************** Please note our meeting location: The IBM offices, at 400 Ellice Ave. (between Edmonton and Kennedy). When you arrive, you will have to sign in at the reception desk, and then wait for someone to take you (in groups) to the meeting room. Please try to arrive by about 7:15pm, so the meeting can start promptly at 7:30pm. Don't be late, or you may not get in. (But don't come too early either, since security may not be there to let you in before 7:15 or so.) Non-members may be required to show photo ID at the security desk. Limited parking is available for free on the street, either on Ellice Ave. or on some of the intersecting streets. Indoor parking is also available nearby, at Portage Place, for $5.00 for the evening. Bicycle parking is available in a bike rack under video surveillance located behind the building on Webb Place. ********************************************************************** For more information about MUUG, and its monthly meetings, check out their Web server: http://www.muug.mb.ca/ Help us promote this month's meeting, by putting this poster up on your workplace bulletin board or other suitable public message board: http://www.muug.mb.ca/meetings/MUUGmeeting.pdf -- Gilbert E. Detillieux E-mail: <gedetil(a)muug.mb.ca> Manitoba UNIX User Group Web: http://www.muug.mb.ca/ PO Box 130 St-Boniface Phone: (204)474-8161 Winnipeg MB CANADA R2H 3B4 Fax: (204)474-7609

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Fwd: HotCloud '09 Registration Now Open
by Gilbert E. Detillieux 02 Jun '09

02 Jun '09

FYI... -------- Original Message -------- Subject: [Board] HotCloud '09 Registration Now Open Date: Thu, 28 May 2009 10:16:05 -0700 From: Lionel Garth Jones <lgj(a)usenix.org> We'd like to invite you to the Workshop on Hot Topics in Cloud Computing (HotCloud '09), taking place in San Diego, CA, June 15, 2009. HotCloud '09 will discuss challenges in the Cloud Computing paradigm, including the design, implementation, and deployment of virtualized clouds. Join academics and practitioners in sharing experiences, leveraging each other's perspectives, and identifying new and emerging "hot" trends in this area. The program includes sessions on: * Cloud Platforms and Architectures * Elastic Clouds and Resource Management * Storage Cloud and Appliances * Map Reduce and Cloud Applications * Panel on Cloud Computing The full program can be found at http://www.usenix.org/events/hotcloud09/tech/ Don't miss this opportunity to engage in dynamic discussion on key topics in the cloud computing community. Register today at http://www.usenix.org/hotcloud09/proga HotCloud will be co-located with the 2009 USENIX Annual Technical Conference (USENIX '09), June 14-19: http://www.usenix.org/events/usenix09/ Multiple Conference Savings: Go to both HotCloud '09 and USENIX '09 and save $100 off your USENIX '09 registration. Contact the Conference Department at conference(a)usenix.org to receive your priority discount code. NOTE: If you're already registered for USENIX '09, contact the Conference Department at the email address above to receive your $100 refund. We look forward to seeing you in San Diego! Sambit Sahu, IBM T.J. Watson Research Center Prashant Shenoy, University of Massachusetts Amherst HotCloud '09 Program Chairs ---------------------------------- Workshop on Hot Topics in Cloud Computing (HotCloud '09) June 15, 2009 San Diego, CA Sponsored by USENIX: The Advanced Computing Systems Association Register online by Monday, June 8, 2009, noon PDT http://www.usenix.org/hotcloud/proga ----------------------------------

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