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How to Build a Custom Kernel on Ubuntu

LinuxToday - Sat, 2017-05-27 19:00

MakeTechEasier: Building a custom Linux kernel sounds terrifyingly difficult, but it's really not that hard.

Free Project Idea - Physical Internet

Reddit - Sat, 2017-05-27 18:18

Let's say things with ISP's go south in the near future, would it be possible to create a physical storage cache of popular websites and distribute like a daily subscription? Could you then call yourself an ISP?

I know people are working on distributed solutions, but this could fill a small niche if you don't really need to be connected to the Internet, basically setting up a small web front end on the client side.

submitted by /u/learntofail
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Debian Installer Stretch RC4 Released

Phoronix - Sat, 2017-05-27 18:04
The fourth release candidate of the installer for the upcoming Debian 9.0 "Stretch" release is now available...

while read line . How come that it does not generate a lot of IO load?

Reddit - Sat, 2017-05-27 17:59

This question is expanding the question that I suddenly realized should be valid in PHP (seeing obvious things is difficult, at least for me).

My point is,:while read line ; do ...code... done < file for a large file should generate a lot of IO requests due to the single line read from the file. If the file read is large with short lines.

Now I know that modern spinning commercial grade disk can handle around 100-150 IOps and SD cards should be around 50, so the code should be quite slow even just echoing the line read. (let's say the latency between printed lines should be noticeable)

It is different when one reads a lot of bytes at once (like with the dd switch bs=16K ), in that case the speed of reading sequentially a file (if the file is not fragmented) is more indicative than the IOps, but a sequential read won't generate that much of IO request because every IO reply would carry a lot of payload, not just a single line of data.

Said that, one can quickly verify that reading single lines is super fast (for the eye at least), why?

Is there a sort of buffering implied in the read application or is the OS prefetching the file? (so maybe similar settings are used for PHP)

Maybe also the memory controller in itself does prefetch the data?

I mean I also know that caching data is possible but foresee a read request is not always returning a cache hit, so prefetching may help, but where is it done?

submitted by /u/pier4r
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The Linux port of Dawn of War III will use both OpenGL and Vulkan

LXer - Sat, 2017-05-27 17:48
Feral Interactive have just announced some exciting news! The Linux port of Dawn of War III will come with OpenGL as the default, but like with Mad Max you will be able to check a box to enable Vulkan!

Airlie Is Looking At Tournier's Soft FP64 Work For R600-Rats

Phoronix - Sat, 2017-05-27 16:23
A few days ago I wrote about David Airlie's work on a new "r600-rats" branch where he's working on bringing up OpenGL 4.2 support to more Radeon HD 5000/6000 series hardware on R600g that's currently limited to OpenGL 3.3. Some questions arose about the FP64 support...

Top 5: Internet-in-a-Box on the Raspberry Pi, strengths of the D programming language, and more

LXer - Sat, 2017-05-27 15:54
In this week's Top 5, we highlight internet access with the Internet-in-a-Box on the Raspberry Pi, the features of the D programming language that makes it great for collaborative software development, how to use the SquuezePi to create a streaming music system for the home office, a longtime Python developer's software engineering rules and testing best practices, and an introduction to the IRC client, Riot.

How to use sed to find and replace text in files in Linux / Unix shell

LinuxToday - Sat, 2017-05-27 15:00

Nixcraft: How do I use the sed command to find and replace on Linux or UNIX-like system?

Do I make the change?

Reddit - Sat, 2017-05-27 14:47

Hey guys, life long windows user here,

I am a currency trader, and I don't use much in the way of softwares,

I use the following: Metatrader 4, Firefox, telegram, Skype, Microsoft OneNote, VLC media player, veracrypt, calibre ebook manager, tor, slack, and a couple of games (AoE collection, hearth stone, etc)

I'm getting rather pissed with Microsoft, they're invading my privacy and annoying the hell out of me. I would like to leave, I hate someone giving me no privacy, but windows works with everything I have

Does anyone have a suggestion?

I keep debating Linux, but it seems a lot to learn to do the same jobs I do now


submitted by /u/brucey2343
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Any printed Linux magazines?

Reddit - Sat, 2017-05-27 14:39

Are there any good printed Linux magazines or other sorts of publication I could subscribe to?

submitted by /u/owenthewizard
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Whatever happened to virtual appliances?

Reddit - Sat, 2017-05-27 14:24

When I first read about virtual appliances I thought 'great, now I will be able to run any windows program on Linux without needing to install an entire OS in VB'

My understanding of this was that you could run a dependency analyser and then create a VB Appliance of that program containing just the program and it's dependencies. I know we have SNAP but is there an easy way to create VB appliances? I thought that one day we would be able to just pick up an appliance version of the program we want to run and install it.

submitted by /u/dtr1002
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Do You Still Use R600g OpenCL Clover?

Phoronix - Sat, 2017-05-27 14:09
While the ROCm OpenCL code was recently open-sourced, that new Radeon OpenCL code only supports newer GPUs like Fiji and Polaris and experimental support for "GFX7" GPUs like Hawaii. Due to this newer OpenCL stack, AMD hasn't been investing in the "Clover" Gallium3D state tracker for providing OpenCL within Mesa. But there are at least some independent developers interested in still working on this older OpenCL code for previous Radeon GPUs, including pre-GCN hardware with R600g...

This Week in Open Source News: Linux Foundation Welcomes New Chief of Staff, Broad Releases OSS Version of Genomic Analysis Software & More

LXer - Sat, 2017-05-27 13:59
This week in Linux and open source news, The Linux Foundation welcomes Sheryl Chamberlain as new Chief of Staff as the organization's collection of projects continues to grow, genomic analysis software opens up & more!

Watch The openSUSE Conference 2017 Sessions Online This Weekend

Phoronix - Sat, 2017-05-27 13:43
The openSUSE Conference 2017 kicked off yesterday in the beautiful Nürnberg, Bavaria. The event runs through Sunday but if you are sadly missing out on the event, there are video live streams and recordings available...

TrueOS Evolving Its "Stable" Release Cycle

Phoronix - Sat, 2017-05-27 13:35
TrueOS, the FreeBSD-derived operating system originally known as PC-BSD, has changed its -STABLE cycle practices...


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