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Building Boost libraries using the xlcpp toolset for IBM compilers on Linux

LXer - Fri, 2016-04-22 17:01
This article introduces the procedures to build Boost libraries with Boost build engine, b2/bjam, using the new xlcpp toolset of IBM XL compilers for Linux on little endian systems. The target audience is software engineers interested in increasing productivity and quality of C++ applications by using the expertly designed Boost libraries. This is important for the development of high-quality applications, where the project requirements exceed the extent of features provided by the C++ standard libraries.

grub2: "invalid sector size 65535"

Reddit - Fri, 2016-04-22 16:30

After setting up my PC with Linux using EFI and grub2 to boot, I installed OpenBSD on the same disk.

Booting OpenBSD shouldn't be that hard with grub2, in fact it took just a few lines (that's what I thought):

menuentry "OpenBSD" { set root=(hd0,gpt4) kopenbsd /bsd -r sd0a }

But as it turned out, this does not work. I'm always ending up with this error message from grub:

"invalid sector size 65535"

I couldn't find any solutions to this that would work for me. So I'm dropping some information about my disk and hope for hints (sorry for localized text from fdisk).

# gdisk /dev/sda GPT fdisk (gdisk) version 1.0.1 Partition table scan: MBR: protective BSD: not present APM: not present GPT: present Found valid GPT with protective MBR; using GPT. Command (? for help): p Disk /dev/sda: 4883781168 sectors, 2.3 TiB Logical sector size: 512 bytes Disk identifier (GUID): E6D6031D-5D54-4BFE-866F-000F05E9DF78 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 4883781134 Partitions will be aligned on 2048-sector boundaries Total free space is 3565 sectors (1.7 MiB) Number Start (sector) End (sector) Size Code Name 1 2048 206847 100.0 MiB EF00 2 206848 105064447 50.0 GiB 8300 3 105064448 4799895551 2.2 TiB 8300 4 4799895552 4883779583 40.0 GiB A600 puffy # fdisk -l /dev/sda Festplatte /dev/sda: 2,3 TiB, 2500495958016 Bytes, 4883781168 Sektoren Einheiten: Sektoren von 1 * 512 = 512 Bytes Sektorgröße (logisch/physikalisch): 512 Bytes / 4096 Bytes E/A-Größe (minimal/optimal): 4096 Bytes / 4096 Bytes Festplattenbezeichnungstyp: gpt Festplattenbezeichner: E6D6031D-5D54-4BFE-866F-000F05E9DF78 Gerät Anfang Ende Sektoren Größe Typ /dev/sda1 2048 206847 204800 100M EFI-System /dev/sda2 206848 105064447 104857600 50G Linux-Dateisystem /dev/sda3 105064448 4799895551 4694831104 2,2T Linux-Dateisystem /dev/sda4 4799895552 4883779583 83884032 40G OpenBSD-Daten submitted by /u/rosenkrf
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Five of the Best Productivity Tools for Linux

TuxMachines - Fri, 2016-04-22 16:30

Operating systems exist so that you can communicate with computer hardware to get things done. On top of the operating system are live applications that make the process of getting things done efficient. That’s where productivity tools come in. What are productivity tools? Naturally, the definition will depend on the angle from which you approach the question. Management productivity is very different from standard office productivity, and it’s the latter I wish to address.

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Sudo as another user w/o password not working

Reddit - Fri, 2016-04-22 16:06

Hi all -

I have a user who requires a specific application be run as another user but without a password (that user has no root elevation rights). Here is what I have tried so far :


When I enter the username1 I get "user_alias referenced but not defined" warning after saving visudo. If I use the uid I do not get that error, but neither works. When I log in as user1 and type "sudo user2" I get prompted for a password. Any help? Thanks!

submitted by /u/5mall5nail5
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Slides From Linux Foundation's 2016 File-System Conference

Phoronix - Fri, 2016-04-22 16:03
The Linux Foundation was hosting their "Vault" Linux storage and file-system conference the past two days in Raleigh, North Carolina...

Ubuntu 16.04 LTS Is Now Available To Download

LXer - Fri, 2016-04-22 15:53
A long waited release Ubuntu 16.04 has finally been made available to download with some new & interesting features. Ubuntu 16.04 is a long-term supported release that means once you install Ubuntu 16.04, it's going to provide security updates, bug fixes and applications updates for 5 years with no if and but. Ubuntu and other family members' (Ubuntu Mate, Kubuntu, Lubuntu, Xubuntu etc.) 16.04 version can be downloaded and installed.

OpenIndiana 2016.04 Released To Let OpenSolaris Live On

Phoronix - Fri, 2016-04-22 15:27
OpenIndiana 2016.04 has been released as the newest version of this operating system based on Illumos and originally derived from OpenSolaris...

16 Things To Do After Installing Ubuntu 16.04 LTS

LinuxToday - Fri, 2016-04-22 15:00

OMG Ubuntu: Some exciting new changes feature in Ubuntu 16.04 LTS so be sure to take a few minutes to familiarize yourself with what’s new and improved.

"vintage" distros you say?

Reddit - Fri, 2016-04-22 14:46

Automate your home with openHAB

LXer - Fri, 2016-04-22 14:44
Jason Baker's recent article on open source home automation tools landed in my RSS feed, and because I recently bought a new home, and am interested in automating some things—or lots of things, really—I read with great interest. In the process, I learned about openHAB, and I was hooked right away. I picked openHAB for my own experimentation because of my slight familiarity with Java.read more

Security Leftovers

TuxMachines - Fri, 2016-04-22 14:05
  • Let's Encrypt Reaches 2,000,000 Certificates

    Earlier today, the Let's Encrypt certificate authority issued its two millionth certificate, less than two months after the millionth certificate. As we noted when the millionth certificate was issued, each certificate can cover several web sites, so the certificates Let's Encrypt has issued are already protecting millions and millions of sites.

  • Hackers Make This Search Engine Out Of 70 Million Voters’ Data

    Did you ever imagine an easily-browsable hacked data available to public and that too in the form of a search engine? Well, here is one of those interesting hacking cases where hackers made a search engine out of the hacked data of the 70 million citizens of Philippines and anyone can easily search for everybody else.

  • How Big Is Your Target?

    In his 2014 TED presentation Cory Doctorow compares an open system of development to the scientific method and credits the methods for bringing mankind out of the dark ages. Tim Berners-Lee has a very credible claim to patent the technology that runs the internet, but instead has championed for its open development. This open development has launched us forward into a brave new world. Nearly one third of all internet traffic rides on just one openly developed project. Its place of dominance may be unsure as we approach a world with cybersecurity headlines. Those headlines do much to feed the industry of fear resulting in government efforts to close doors on open source efforts.

    This paper is a qualitative theoretical discussion regarding cyber security and open source solutions written in three parts. Its goal is to demonstrate that the use of open source technologies reduces vulnerability to cyber attacks. The first part of this paper identifies the difficulties in presenting a software consideration model capable of illustrating the full spectrum of expectations for the performance of today’s code. Previous models merely address basic requirements for execution namely security, functionality & usability. While these aspects are important they fail to take into account modern requirements for maintenance, scalability, price, reliability and accessibility of software. This part of the paper modernizes the model developed by Andrew Waite and presents a clear model for software discussion.

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OpenStack News

TuxMachines - Fri, 2016-04-22 14:04
  • OpenStack Summit in Austin is almost here!

    OpenStack comes home to Austin on Monday for the OpenStack Summit! I will be there with plenty of other Rackers to learn, collaborate, and share our story.

  • How the science of happiness can improve OpenStack teams

    What does the science of happiness have to do with OpenStack? As it turns out, a lot. An international community of contributors works on OpenStack, so the overall health of the large pool of community members influences the direction of OpenStack projects. In this interview, OpenStack Summit speaker Alexis Monville (Director, Improvement & Dissemination of the Red Hat Cloud Innovation Practice) explains how contributors can increase their happiness on individual and team levels, and he offers a few resources for building healthier teams.

  • What's the total cost of ownership for an OpenStack cloud?

    Technical discussions around OpenStack, its features, and adoption are copious. Customers, specifically their finance managers, have a bigger question: "What will OpenStack really cost me?" OpenStack is open source, but its adoption and deployment incur costs otherwise. So, what is the OpenStack TCO (total cost of ownership)? There has been no systematic answer to this question—until now. Massimo Ferrari and Erich Morisse, strategy directors at Red Hat, embarked on a project to calculate the TCO of OpenStack-based private cloud over the years of its useful life.

  • Open Source Cloud Apps: 65 Cloudy Apps

    Open source cloud apps are the wave of the future -- and the present. Cloud computing itself is no longer just a buzzword, it's becoming simply the ways things are done. IDC predicts that public cloud spending will grow from $70 billion in 2015 to more than $141 billion in 2019, a compound annual growth rate of 19.4 percent. That is six times faster growth than the firm expects to see for IT spending as a whole.

    The open source community is playing a major role in the growth of the cloud with projects like OpenStack, CloudStack and others providing some of the fundamental building blocks that enable both public and private cloud computing. In addition, many open source project owners make cloud-hosted versions of their software available on a software as a service (SaaS) basis, which gives them a way to monetize their projects and simplifies deployment and support for users.

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Leftovers: Ubuntu

TuxMachines - Fri, 2016-04-22 14:02

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Diamanti exists stealth with a converged appliance for running containers

LinuxToday - Fri, 2016-04-22 14:00

silicon angle: One of the main reasons behind the popularity of containers is that they make it much easier to deploy applications than traditional virtualization software.


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