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System & Utilities

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Editor's Note: There is More to Linux Than Ubuntu

System & Utilities

The fine people at Canonical are experts at keeping Ubuntu in the news, and keeping a lot of buzz alive.


  
Подробнее | Разместил: KDE News | Дата: 05.04.2010 | Прочитано: 416 | Комментарии

Ariya Hidayat: simple http proxy server in 100 lines

System & Utilities

I guess a simple proxy server should have been an example in Qt Network module. What I mean of course a real proxy server based on Qt, not about using a proxy server via QNetworkProxy class. After all, there are other more complex examples like the torrent client and Google suggest (yeah, blame me for the latter). As a matter of fact, there are e.g. a gazillion proxy servers written in Python.

Look no more. I posted an example in the X2 repository, under the directory network/webproxy. The code is written for clarity and not for performance. In fact, fancy error handling is even omitted (minimalism rulez!). There is no support for pipelining, or in-memory cache, or per-connection thread, or even secure connection via https. I leave them as exercises for the curious readers.

If we focus on things which work, here they are: asynchronous socket handling, different request methods ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 05.04.2010 | Прочитано: 481 | Комментарии

Sune Vuorela (pusling): A Qt frontend to aptitude as a GSoC project?

System & Utilities

I’m currently trying to convince (and hopefully succeeding) Daniel Burrows to co-mentor a Qt frontend for aptitude.

But for that a student is needed. http://wiki.debian.org/SummerOfCode2010/Aptitude-Qt for first draft of project.

http://wiki.debian.org/gsoc for information about GSoC and debian
and #debian-soc on irc.debian.org if you prefer that communication media.


  
Подробнее | Разместил: Planet KDE | Дата: 05.04.2010 | Прочитано: 420 | Комментарии

Torsten Rahn (tackat): Marble Virtual Globe and Google Summer Of Code 2010

System & Utilities

The student application deadline for Google Summer of Code 2010 is near: So if you plan to submit an application for a Marble project then it needs to arrive no later than April 9, 19:00 UTC.
I have just added a few more ideas to the idea page: OpenDesktop.org support and Panorama support. So now in total there are five Marble ideas listed on our idea page:

Of course this isn't the limit, so if you come up with another great idea don't hesitate to apply for it.
In other news we've just created a Marble Facebook Group for all users of Marble and Facebook.
Join us! Join the Marble Community!


  
Подробнее | Разместил: Planet KDE | Дата: 04.04.2010 | Прочитано: 411 | Комментарии

Guillermo Antonio Amaral (gamaral): Animus Me – 2010-04-02

System & Utilities

Today on the mega super extra big ass gamaral show: @GabrielSaldana and yours truly talk about SCO, KDE Spring Cleaning, FreeBSD ports and mucho mucho more!. ( all in under 15 40~ minutes :S )

Please send in your comments and ideas to: g@maral.me.

Animus Me – 2010-04-02 (MP3)
Animus Me – 2010-04-02 (OGG)

Subscribe! (MP3)
Subscribe! (OGG)

Music by the band Hype song called Home (awesome)!


  
Подробнее | Разместил: Planet KDE | Дата: 04.04.2010 | Прочитано: 432 | Комментарии

Valorie Zimmerman (valorie): Installing Lucid beta -- Adventure Story or Buddy Movie?

System & Utilities It seemed so simple. I went to Kubuntu.org and downloaded and installed the update yesterday afternoon, no problem! This morning, KpackageKit informed me that I had over 1000 updates, and since I was busy with Alsachat, I decided to just let it go, although I was a bit apprehensive about the power situation. We had a wind advisory going on, and I know that disconnecting during updates is a very bad idea. With about 30 minutes to go, however, KpackageKit crashed! When I tried to use the console (as I should have in the first place), I couldn't because KpackageKit had crashed, and not cleanly quit. If I had been thinking clearly, I would have used the command killall kpackagekit, but I thought it was named "kpackageit" -- and didn't look it up. So I restarted, and got a kernel panic!

I didn't panic, though -- I attempted to start in safe mode, without success. Then I selected the next oldest kernel, and dropped down to the command level. However, I was unable to successfully use ...read more...

  
Подробнее | Разместил: Planet KDE | Дата: 04.04.2010 | Прочитано: 1186 | Комментарии

Colin Guthrie (coling): How to develop on KDE

System & Utilities

This is just a mixed back of info I've picked up along the way on how to develop with relative ease on KDE applications/libraries without totally trashing your system provided versions.

As a packager, it's important for me to be able to test the packages I produce so having a system that is solely running the latest and greatest upstream versions is not desirable. In order to do this I don't maintain two separate installations (that's too complicated and too much effort), rather I build all the upstream stuff into it's own prefix and then run it from there. It's totally separate from my system binaries (and shouldn't ever need root). Cleaning up is as simple as an rm -rf.So when you have a fresh checkout (git clone or svn checkout) of the code in question, I typically run the following:

[colin@jimmy kdemultimedia4]$ mkdir build
[colin@jimmy kdemultimedia4]$ cd build
[colin@jimmy build]$ kdecmake ..
[colin@jimmy build]$ make install

Nothing too magic there... but what is this strange "kdecmake" command? Well it's a simple little script I wrote to handle the ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 03.04.2010 | Прочитано: 520 | Комментарии

Rapid Progress in KDE Multimedia

System & Utilities

Lately we have made some really nice progress on the Multimedia front, and I thought it would be nice to keep our users a bit up-to-date with all the latest buzz.


  
Подробнее | Разместил: KDE News | Дата: 03.04.2010 | Прочитано: 409 | Комментарии

Jos Poortvliet: Diversity Grant

System & Utilities In the spirit of our recent celebration of Ada Lovelace day, Google and the NLUUG announce the Google Diversity Travel and Conference Grant. Female system administrators who would like to participate in the NLUUG System Administration spring conference should apply!

The NLUUG usually sets up very high quality conferences, so if you would like to learn more about the profession of system administration, it's certainly worth checking out~ even if you're male ;-)

  
Подробнее | Разместил: Planet KDE | Дата: 03.04.2010 | Прочитано: 419 | Комментарии

Michael Pyne (mpyne): KSharedDataCache

System & Utilities

So in my last post I had mentioned some of the issues that have been encountered with KPixmapCache, and that I was working on a separate implementation.

Based on the fact that the underlying code is easily made more general purpose I’ve gone ahead and went down that path. With that in mind, the current code I have is available from a branch of kdelibs that I’ve made a few hours ago, called kdelibs-shareddatacache, available from /branches/work. This branch adds a class called KSharedDataCache, adds a KImageCache which operates on top of KSharedDataCache, and updates Plasma::Theme and KIconLoader to both use KSharedDataCache.

I don’t have time to go over the implementation details (I’ll try to do so this week if I get time though) but I will throw out the following:

  • My port of KIconLoader was so much of a hack that the original KIconCache is still there! It’s just not being used for icons. I think the Plasma::Theme work is a little cleaner but probably could be better handled itself.
  • Changing the icons requires a separate patch to ...read more...

  
Подробнее | Разместил: Planet KDE | Дата: 03.04.2010 | Прочитано: 458 | Комментарии

Thomas Thym (ungethym): Finding the KNetbook (part II)

System & Utilities As a wrote a view weeks ago I am searching a notebook for my wife to run KDE SC 4.4 on Linux on it. Now we decided that it would be a netbook.

Why am I telling you that. I am still unhappy with the small market share Linux has and want to point to some points I recognized during my way to find my product.

Steps if I wanted a netbook without preference for an operating system:
  1. Check some netbooks at a netbook test or discussion site of your choice.
  2. Check the hardware in a store of your choice.
  3. Buy the netbook and have fun try to use it.
Steps if I want a KDE netbook:
  1. Check some netbooks at a netbook test or discussion site of your choice.
  2. Spend hours to search the web if there are known issues with hardware compatibility.
  3. Oh yes, there are known problems. But the sites were last updated one year ago. Perhaps the problem is solved by now? Keep on searching!
  4. Check one or many of the hardware compatibility sites of major distros.
  5. Find out, that ...read more...

  
Подробнее | Разместил: Planet KDE | Дата: 02.04.2010 | Прочитано: 476 | Комментарии

Guillermo Antonio Amaral (gamaral): lottalinuxlinks.com linux user spacecast 2458

System & Utilities

Lotta Linux Links – Space Dave talks about the XO*8 PC and Linux 2.8 recently released by Linus Torvalds III.

Please send in your comments and ideas to: Space Dave.

You can find Space Dave’s ancestors oggcast here.

Animus Me – 2010-04-01 (MP3)
Animus Me – 2010-04-01 (OGG)

Subscribe! (MP3)
Subscribe! (OGG)

Music by the awesome space band Jssystem!.


  
Подробнее | Разместил: Planet KDE | Дата: 02.04.2010 | Прочитано: 408 | Комментарии

Reply to comment

System & Utilities

KDE4: It hurt, but did it work? Last month's release of the KDE 4.4 desktop environment restored the faith of many after what has been something of a roller coaster two years.


  
Подробнее | Разместил: KDE News | Дата: 02.04.2010 | Прочитано: 389 | Комментарии

Theo Chatzimichos (tampakrap): Gentoo Bugday, Saturday 3rd April

System & Utilities

As every first Saturday of the month, on April 3rd we will have the usual bugday at #gentoo-bugs (freenode). This is a good opportunity for the users to contribute to their favorite distro. Sebastian Ping started a long discussion in gentoo-dev mailing list which resulted in creating a nice Bugday flag in bugzilla. You can see his blog post for additional info on this.

As far KDE/Qt is concerned, so far I marked several KDE bugs as bugday candidates, and I’m going to mark even more tomorrow, and also do the same thing with Qt bugs. For KDE, most of them are old bugs that may not affect current releases, so what we want from you is to try to reproduce with recent KDE installations and leave a comment in the bug. This is mostly a reply to the usual question: “I’m not a developer, how can I help?”. Of course, patches are always welcome. Since the list is long, I’m willing to coordinate with users until Wednesday (which will make it an extended bugday ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 02.04.2010 | Прочитано: 425 | Комментарии

Lim Yuen Hoe (moofang): Holy, (IMO) Apple did the iPad right

System & Utilities

So all this jumble of talk on Apple’s latest gadget-child has been buzzing around the fringes of my consciousness for a good while now without me stopping to pay attention and actually seeing what all the hype is about. After all, I was (and still am) pretty convinced that I am simply not going to get an iPad. And then today, feeling somewhat unable to work, I decided out of curiosity to finally bring up Mr Job’s little keynote in which he introduced the iPad, and gave it a watch-over.

And damn, I gotta say. Apple really has this one nailed.

It sounds ridiculous at first, at least to me it did. Why in blazes would I want to lug around something so awkwardly and awfully huge (compared to a regular mobile device) that doesn’t pack half the power I get with a regular laptop? However, watching that video, I realized for the first time how much I had overestimated the girth of the thing from all the front-view photos I’ve seen. The ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 02.04.2010 | Прочитано: 444 | Комментарии

Pedro Lopez-Cabanillas: KMid in Mac OSX

System & Utilities This is not an April Fool's joke. KMid is running in Mac OSX, native:


I've developed KMid's Mac native support using Fink, that includes KDE SC 4.4.1

By the way, there are fresh news at Fink web site: "Effective 1 May 2010, we are going to cease work on our Mac efforts, and switch to development for the iPad, iPhone...". Oh, wait! today is April 1st...

Now seriously. You need: Xcode 3.1.4, that provides GCC 4.2
And some dependencies from Fink: kdelibs4-mac-dev, kde4-buildenv, cmake. These packages require some other dependencies.
Recommended: bundle-kde4-mac. This set is very large, and includes everything for a complete KDE environment.

KMid doesn't use Phonon. The native Mac OSX backend uses CoreMIDI and CoreAudio, and the Apple DLS soft synth enabled by default. Everything is included in OSX. Receipt:

1. Get the sources from the repository:
$ svn co svn://anonsvn.kde.org/home/kde/trunk/extragear/multimedia/kmid/

2. Prepare the build environment:
$ export ...read more...

  
Подробнее | Разместил: Planet KDE | Дата: 01.04.2010 | Прочитано: 444 | Комментарии

Klaas Freitag (dragotin): Announce: openSUSE Beego

System & Utilities

the openSUSE distribution is the perfect base for specialized projects focusing on a certain area of application. Today, I am happy to announce the start of the openSUSE Beego project and ask you to join in and help to bring it to a success, because we rely on your support and enthusiasm.

What is openSUSE Beego about? Beego is the perfect customized linux distribution for beekeepers who want to manage their bees on a by today never unreached level. With openSUSE Beego we focus on key features like KHive, the management software for the beeyard, the bluetooth based Weightwatch to monitor the hive weigt and of course GHoney, which takes its users to a new level of honey blending by the latest Computer Aided Honey Blending Technology (CAHBT). The latest release of Queen on Rails, a web based bee queen marking and scheduling software is preinstalled and -configured.

All that relies on a perfectly customized kernel to meet the tough requirements of beekeeping. With solid real time capabilities the Beego kernel is able to process all incoming ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 01.04.2010 | Прочитано: 449 | Комментарии

Hans Chen (Mogger): Hide window border for maximized windows

System & Utilities

Work with Userbase is progressing nicely. I wrote some suggestions based on user feedback and my own opinions, and a few days ago there was a small discussion about the future of Userbase on IRC.

However, this post isn’t about Userbase – I hope I’ll find some time to summarize the plans for the wiki here in a few days. Today I want to share another tip that I’ve found and need to remember to add to Userbase: Borderless Maximized Windows.

This option is very useful for devices with small screens, such as netbooks, to give slightly more space to your applications. If enabled, the window border will hide automatically when you maximize a window (and vice versa when unmaximized).

If I remember correctly, this feature was introduced in KDE Software Compilation 4.5 for the Plasma Netbook workspace, where it’s enabled by default. Here’s a short screencast demonstration (what, not an animated GIF!?):

Note that I used double click to maximize the windows. This is configurable in System Settings


  
Подробнее | Разместил: Planet KDE | Дата: 01.04.2010 | Прочитано: 403 | Комментарии

Paul Adams: Akademy At Lightning Pace

System & Utilities

Firstly, a gentle reminder that the deadline for the Akademy CfP is looming. If you have something to talk about and you think it might be of interest to KDE, submit! Next, we have made a last-minute decision to, once again, include lightning talks in Akademy. If you have a topic to talk about, but only want to talk for 7 minutes, then these talks are for you! Submission process is exactly the same as with normal talks.

Now I am not normally in the business of promising “jam tomorrow”, but I am promising pretty pictures. The run of visualisations for KDE SVN modules in March will be automagically processed overnight. All images related to KDE PIM development will be blogged about in the coming week. Anyone who asked for specific results to be mailed to them will receive them within the week as well.


  
Подробнее | Разместил: Planet KDE | Дата: 01.04.2010 | Прочитано: 404 | Комментарии

Aaron Seigo (aseigo): Javascript Jam Submission Deadline Today!

System & Utilities
All submissions for the Plasma Javascript Jam must be sent in by midnight tonight UTC to javascriptjam at kde dot org!


We've already received a number of submissions over the last week and one lucky developer will be walking away with a shiny new N900 of their own as a result! Submissions will be published on the 2nd, voting by the community (20% of the final score!) will start (hopefully) on the 3rd (I will post details when that happens) and winners will be announced on the 9th. Exciting times! :)

  
Подробнее | Разместил: Planet KDE | Дата: 01.04.2010 | Прочитано: 420 | Комментарии

Matthias Kretz (Vir): Rant: OpenOffice.org Impress headaches

System & Utilities Author

I currently have to create slides for a lecture. Since my Professor uses PowerPoint there are not many options how to create those slides. So far I have 40+ slides done with OpenOffice.org Impress. And OOo completely fails to impress. I have seldomly seen an application getting more in my way of working. Probably the biggest issue is performance. Waiting several seconds for the UI to become active again between every few actions is just ....

On Monday I did a few slides for a talk with vim-latexsuite + LaTeX beamer. What a joy. :-) I just have no hope of converting my Prof. to LaTeX beamer. Conversion to OOo Impress would surely be possible, but not with such a non-performing program. :-(

I just tried the latest KPresenter. But it shows completely different slides than OOo, especially the eps graphics and custom animations are a killer. And I expect that I won't have much success in collaboration with a ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 31.03.2010 | Прочитано: 431 | Комментарии

Adriaan de Groot (adridg): Freedom! (Document-wise)

System & Utilities

Today, March 31st, is Document Freedom Day. It’s a day in which we (for some fuzzy meaning of “we”, but including at least Free Software developers) stress the importance of Open document formats. Those are formats which are documented as an Open Standard, which is to say that their syntax and semantics are both described in a fashion that is available to the public and well understood. Plain text is such a format, and it works well for certain kinds of unstructured documents — stories, essays, etc. Well, assuming you know what character encoding is used and that the hardware encoding is understood as well. If you want a little more structure, then something like LaTeX can get you markup and layout and whatnot. However, LaTeX can be a terrible mess and understanding just what a given document does can’t really be decided except by running LaTeX over it and waiting for output.

A really Open document format has a standards document attached to it, one that defines exactly what the ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 31.03.2010 | Прочитано: 570 | Комментарии

Trever Fischer (tdfischer): Systemsettings Reorganization: Part II

System & Utilities

If you didn’t glean it from my call for icons, then here’s what you missed: systemsettings needs reorganizing and some better icons.

Dario Andres and Ben Cooksley have a proposal up on TechBase that goes reasonably in-depth to explore a better organization of systemsettings. Today, I spent time with a friend of mine who isn’t a power user, but an ‘average’ KDE user. I sat down with her over the period of a few hours and came up with some interesting notes while I asked her to do various tasks, comment on why she thought certain things would be in places, and generally go through every icon in the 4.4 systemsettings layout.

The way I went through things was I asked her to perform some task, and I asked questions to explain her thoughts when she seemed confused, made a quick decision, or the wrong choice. Here’s what we came up with, roughly translated from my notes:

Task: Change the screensaver

Her first move was to jump to the appearance icon and poke around ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 31.03.2010 | Прочитано: 554 | Комментарии

Kde SC 4.4.2 arrives with various bug fixes

System & Utilities

"The KDE developers have released version 4.4.2 of the KDE Software Compilation , the latest bug fix release for the popular Linux desktop.


  
Подробнее | Разместил: KDE News | Дата: 31.03.2010 | Прочитано: 413 | Комментарии

Milian Wolff (milianw): Profiling Rocks - KDevelop CMake Support now 20x faster

System & Utilities

I just need to get this out quickly:

We were aware that KDevelop’s CMake support was slow. Too slow actually. It was profiled months ago and after a quick look that turned up QRegExp, it was discarded in fear of having to rewrite the whole parser properly, without using QRegExp. Which btw. is still a good idea of course.

But well, today I felt like I should do some more tinkering. I mean I managed to optimize KDevelop’s Cpp support recently (parsing Boost’s huge generated template headers, like e.g. vector200.hpp is now 30% faster). I managed to make KGraphViewer usable for huge callgraphs I produce in Massif Visualizer. So how hard could it be to make KDevelop’s CMake at least /a bit/ faster, he?

Yeah well an hour later and two commits later, I managed to find and fix two bottlenecks. Both where related to QRegExp. Neither was the actual parser, instead it was the part that evaluated CMake files, esp. the STRING(...) function. So even if we’d used a proper parser generator, this would still ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 31.03.2010 | Прочитано: 478 | Комментарии

Abhishek Patil (_abhishek): KDE: Kate Tabify Plugin

System & Utilities

Well this was my own wish list to have normal Tab Bar in Kate.
And finally I wrote a Tab Bar Plugin – Tabify (this is for now mostly will changed it to TabBar Extension in svn later)

This is how it looks

Here is the patch and this is the “Tar” for the folder.

enjoy :)


  
Подробнее | Разместил: Planet KDE | Дата: 30.03.2010 | Прочитано: 509 | Комментарии

Adenilson Cavalcanti (Savago): jsanim: current status

System & Utilities

From my previous post about jsanim (javascript animations) where I explained the motivations about the idea, I’m writing to report the current status.

I got stuck while trying to create an instance of a javascript class from C++ side in QScriptEngine, but I was helped by khansen (you rock man!).

Being able to create an instance got to address an important issue in the first PoC: run more than 1 animation. Now each animation type will have a javascript class, where its instance will point to the animation target widget and hold the animation parameters. This design has some advantages:

  • uses a single QScriptEngine object (implemented as a singleton);
  • can run multiple animations;
  • multiple animations can access the same widget;
  • is more OOP oriented (the animation loop will call a method on the javascript class);

How fast (or slow…) is it to use QScriptEngine to animate a widget’s properties? What about a video?

Notes: it has 8 QGraphicsWidgets, 24 animation objects (zoom, fade, rotate), running in the Nokia N5800.

What is next is profiling ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 30.03.2010 | Прочитано: 491 | Комментарии

Gilles Caulier (cgilles): kipi-plugins 1.2.0 released...

System & Utilities

Dear all digiKam fans and users!

digiKam team is proud to announce Kipi-plugins 1.2.0 !

pw upload3

kipi-plugins tarball can be downloaded from SourceForge at this url

Kipi-plugins will be also available for Windows. Precompiled packages can be donwloaded with KDE-Windows installer. See KDE-Windows project for details.

See below the list of new features and bugs-fix coming with this release:

NEW FEATURES:

read more


  
Подробнее | Разместил: Planet KDE | Дата: 30.03.2010 | Прочитано: 448 | Комментарии

Sebastian Pipping (sping): Before svn2git you want to run: svneverever

System & Utilities

First: There are several tools called svn2git: this is about the svn2git of KDE up on Gitorious.

So you’re about to convert a larger SVN repository to Git, say 15,000 revisions. You check out the latest revision, run some find command or fire up a file browser to get a better view of file hierarchy in there. Then it strikes you:

  • What if the layout didn’t look like that all the time?
  • Are there any sub projects hidden in there that you want to ignore or extract to a separate repository?

You may end up using “svn ls” or something peeping in here and there not being really sure until you’ve seen it all. What a nightmare.

When converting the repository of Gentoo’s Portage I wrote a simple tool in Python to do that work for me in automated fashion: I called it svneverever.

It runs through all history collecting additions of directories. In the end it presents a tree of all directories ever having existed ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 30.03.2010 | Прочитано: 473 | Комментарии

Friedrich Kossebau (frinring): GSoC ideas I dream somebody would do…

System & Utilities

While commenting on one of the application drafts to work on UPnP (MediaServer) support for Amarok I wondered why this proposal is mainly about support for Amarok and not the whole of KDE Platform based programs, especially as the solution is considered to be done basically as a kio-slave. To be honest, I don’t use Amarok (because I only seldomly listen to music, rather make myself some… uhm, noise), but still I would like to be able to access the content on UPnP MediaServer devices from Dragon Player, Kaffeine or Gwenview. And Okteta ;)
Same is true for other protocols only Amarok supports. Why no DAAP (from a Firefly Media Server of course) access from Kaffeine, too? Well, there once (KDE3) was a DAAP kio-slave which, besides not being ported, seems to have been dropped due to the latest, unknown protocol version (this proprietary restrict system called iTunes should not be supported anyway). But the simple list-stat-get kio-slaves have the problem that they do not expose all of the data which is ...read more...


  
Подробнее | Разместил: Planet KDE | Дата: 30.03.2010 | Прочитано: 600 | Комментарии
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