Linuxers March 2007

linuxers@mm.ilug-bom.org.in

83 participants
99 discussions

book / tutorial / link for learning arm linux
by neelam 06 Mar '07

06 Mar '07

hi i m wrkng with a embeded system which makes use of arm linux pls provide some references for arm linux............ thnx --------------------------------- Don't be flakey. Get Yahoo! Mail for Mobile and always stay connected to friends.

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Adding signatures at the end of mail messages
by Harshal Vaidya 05 Mar '07

05 Mar '07

I have a requirement of adding different images or signatures in every outgoing mail from the MTA. We are setting up a mail infrastructure in our office and haven't yet chosen any MTA. Does anybody have any experience in this situation and will any MTA allow writing a custom plug-in which attaches different signatures with different mails. All ideas are welcome. Thanks and Regards Harshal Vaidya http://www.lakhpatipage.com

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Re: deb vs. rpm
by Manoj Srivastava 05 Mar '07

05 Mar '07

Hi, [Please pardon the cross posting. I felt that this mail is not off topic for any of the mailing lists I have posted it to, and it is about time we had a technical, as opposed to sentimental or loyalty based look at the .deb and .rpm file formats, I have read the acceptable use policies of all three lists, and I think this is not in violation of any of them. I apologize if I am mistaken] It might be instructive to compare … [View More]package file formats on a purely technical level: http://kitenet.net/~joey/pkg-comp/ This is a fairly authoritative document, and well worth understanding. Here follows commentary on the major points of difference oj just the rpm and deb format (please read the URL for details regarding other package formats). 1) Data unpack-able by standard tools, meta-data accessible by standard tools, and ability to create a .deb with standard (non distribution specific) tools: .debs are just ar archives of tar-balls, and can be unpackaged, inspected, and created using cp, chmod, ar and tar. rpm's need a special tool. Now, why is this important at all? Well, think of a classified environment, where you do not want to rely on the packaged tool to help you with forensics; but you have a trusted solaris box. 2) Package relationships: The .deb format has a more nuanced set of relationships, incorporating recommendations and suggested packages, and orders packages by priority as well as group. rpm does not have the nuanced relationship, nor priority, but it does have file based dependencies, and easily extract-able copyright information so it is easier to marshal packages by copyright info. Personally, I am of the opinion that file dependencies are a mixed bag; they complicate the package dependency graph with edges that are different from a package dependency; added to the less nuanced dependency and priority information, they make the installation ordering of rpm's far less sophisticated. dpkg goes through a song and dance ordering packages with topological sorting of the graph, breaking installation into chunks to ensure that no conflicting packages ever are unpacked at the same time, unpacking and configuring packages in dependency order, and rolling back failed installation. rpm does installations on a best effort basis, and thus failures at critical stages leave the system in an untenable state. 3) rpm can mark documentation files (makes it easier to find docs), and has ghost files, files which are not shipped in the package but are registered as being owned by the package. For documentation, Debian relies on convention; all package documentation is found in /usr/share/doc/$package; but ghost files are clearly a plus for rpms. 4) Debian packages may run binaries at install and un-install times. I am not sure if this is a major plus. 5) Package verification and triggers -- rpm has them, and package verification is one of the major features missing in a .deb. triggers, well, there is a technical proposal currently being debated about adding triggers to dpkg, but obviously, Debian is playing catch-up here. 6) New sections in the package format: .debs were designed to be extensible, and whole new sections can be added to the package by adding yet another tar-ball or the ar archive. Some of the future additions being planned are detached signatures by various keys; developers key, build daemon maintainer key, archive maintainers key, release manager key, mirror master key, -- in a new section of the package file. So, new data sections, compiled binaries for more than one sub-arch, or 32 and 64 bit binaries -- they can be added easily to a new section, and dpkg be told how to deal with the new sections by inspecting the .deb format version. rpm's can't as easily cope with unseen new requirements. manoj -- "Nuclear war can ruin your whole compile." Karl Lehenbauer Manoj Srivastava <srivasta(a)acm.org> <http://www.golden-gryphon.com/> 1024D/BF24424C print 4966 F272 D093 B493 410B 924B 21BA DABB BF24 424C [View Less]

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Re: [ILUG-BOM] Vdata card use
by Koustubha Kale 05 Mar '07

05 Mar '07

Koustubha Kale wrote: >> I have a Tata Indicom VDATA PCMCIA card for internet access when out of office. >> Is it possible to use this with Fedora core 6? Any pointers please. >I have used the Huawei EC321 data card on FC6.x86_64. Setting it up >using wvdial was a breeze. If you want, I can provide you the wvdial >settings that I used. > >-- >Regards >Vivek J. Patankar I got it working with wvdial. Also got the modprobe to do it automagically as described … [View More]

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Fwd: Web-wala workshop
by Anurag 04 Mar '07

04 Mar '07

The Attached PDF file is kept here: http://db.ilug-bom.org.in/WorkShops/webwala-workshop.pdf Anurag ---------- Forwarded Message ---------- Subject: Web-wala workshop Date: Wednesday 28 February 2007 00:25 From: "Chandita Mukherjee" <chandita.mukherjee(a)gmail.com> To: Dear Friend Please have a look at the invitation attached. Web-wala is a very exciting workshop developed by us through several rounds. It opens various doors to the world of information communication technologies: … [View More]

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Re: [ILUG-BOM] Learning Language
by Debarshi 'Rishi' Ray 04 Mar '07

04 Mar '07

>> I'd say learn secure programming and MVC, learn proper indentation, >> learn documentation and commenting. > who is to teach it? "The Practice of Programming" by Brian W. Kernighan and Rob Pike; published by Pearson Education (maybe Prentice Hall does it too). Costs less than Rs. 300. Read the first chapter: "Style". It teaches it. Regards, Debarshi -- GPG key ID: 63D4A5A7 Key server: pgp.mit.edu

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Protection of personal info on the wiki
by Mohan Nayaka 04 Mar '07

04 Mar '07

Hi all, As all content on the wiki is under GFDL, anyone can improve it. However, I have a doubt regarding the user pages on the wiki. If it is possible for anyone to edit user home pages, these pages may be defaced. I am aware that self-regulation will probably keep away this problem just like the rest of the wiki. In this case, however, personal information may be distorted. Therefore, I would like to know what can/should be done to minimize this risk. Regards, Mohan S N -- Never look up … [View More]

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Debian Etch Installation Report
by Mrugesh Karnik 02 Mar '07

02 Mar '07

Hi, I have just posted the text only version of my Debian Etch Installation Report to the wiki. It's available here: http://db.glug-bom.org/wiki/index.php/Debian_Etch_Installation_Report I have taken lots of screenshots and I'll post them tomorrow. The installer has a handy facility for taking screenshots if you're curious. Also, I found a MAJOR security bug with respect to the sudo integration. I enabled it and found that root login with a blank password was possible. I haven't tried … [View More]

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Re: [ILUG-BOM] [Annoncement] Ubuntu-India at Carte Blanche 2007
by Vickram Crishna 01 Mar '07

01 Mar '07

> We hereby call for participation from all Ubunteros > and Ubuntu fans, > join our volunteers and help them display the power > of the Ubuntu > community and our favorite distribution. > Congratulations for doing something to raise the public status of this nice distro. I am working on physical distribution of Ubuntu releases in India, which will hopefully cut down the time to deliver and perhaps free up some money to fund further work in FOSS. Possibly the same route … [View More]

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Linuxers March 2007