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Like most people, I have a fairly sizeable collection of audio files stored on my hard disk in .mp3 or .ogg format - music, copies of interviews, podcasts and old radio shows. Which is great for my MP3 player and my laptop computer, but it isn't any good for my basic standalone CD player which doesn't have a clue how to play MP3 files. So until I get a better CD player I use a simple technique to create audio CDs that all CD players can handle.

I started using this technique a couple of years ago and despite a recent spate of free software applications for Linux that can pretty much do the same by simply pointing and clicking, I still find myself reverting to the command line.

Creating audio CD compilations on Linux


phpSysInfo is a customizable PHP script that parses various files in /proc and displays them. It will display information about system facts like Uptime, CPU, Memory, SCSI, IDE, PCI, Ethernet, Floppy, and Video. It now has full internationalization support along with customizable templates.

Phpsysinfo Requirements

Web server (apache2) with php4 or later support

Installing phpsysinfo in Ubuntu

sudo apt-get install phpsysinfo

After completion of your installation this program automatically located at apache2 default document root directory i.e /var/www/phpsysinfo/ folder

Display Your system Information (Uptime,CPU,Memory,SCSI,IDE,PCI,Ethernet,Floppy,and Video) Using Phpsysinfo


Errors like these:

libGL error: open DRM failed (Operation not permitted)
libGL error: reverting to (slow) indirect rendering

can occur when the xorg.conf file is hand-edited to add or uncomment the lines:

Load "glx"
Load "dri"

...while the following section is either missing, or commented out:

Section "DRI"
Mode 0666
EndSection

libGL error: open DRM failed (Operation not permitted)


Rainlendar is a calendar application that doesn’t take up much space on your desktop. You can use it to keep track of events and tasks, and with the pro version you even can sync with network calendars.

Installing rainlendar on ubuntu is extremely simple. Just download the file and extract it wherever you feel like.

Installing Rainlendar2 on Ubuntu


Shadow passwords have been a de facto standard with Linux distributions for years, and as well as the use of md5 passwords. However, there are drawbacks to using the traditional shadow password method, and even md5 is not as secure as it used to be. One drawback to the shadow password file is that any application that requires looking up a single shadow password (i.e., your password) also can look at everyone else's shadow passwords, which means that any compromised tool that can read the shadow file will be able to obtain everyone's shadow password.

There is an alternative to shadow, called tcb, available from the tcb home page written by the Openwall Project. Migrating to tcb is fairly straightforward, although it can take a bit of work. Because only Openwall GNU/*/Linux, ALT Linux, and Annvix support tcb out-of-the-box, to get tcb support in your chosen distribution, you will have to recompile and patch a few programs.

Migrating from shadow passwords to tcb in Linux


There are many articles on the Interwobble telling you how to set the process title on Linux; they all concentrate on the problem of placing an arbitrarily long string in argv[0] to report status information in the process list.

But what if argv[0] is fine, and what you want to do is remove the following arguments from the process list? Perhaps they contain sensitive information, or perhaps they’re just likely to be surprising.

A fictional example may look like this:

Hiding arguments from ps


Open SSH is the most widely used SSH server on Linux. Using SSH, one can connect to a remote host and gain a shell access on it in a secure manner as all traffic is encrypted.

A neat feature of open SSH is to authenticate a user using a public/private key pair to log into the remote host. By doing so, you won't be prompted for the remote user's password.

This tutorial will describe how to create a SSH public/private key pair, how to enable key based authentication and finally how to disable password authentication.

Secure your SSH server with Public/Private key authentification


Image manipulations can be done through command lines. Most of the time, we use GUI software such as GIMP to manipulate graphics, but sometimes it is not convenient to use such huge tool to just perform some simple image manipulation such as resize. Image Magick and Graphics Magick gives us various of command line on image manipulation. In this post, I am going to show you a simple example on how to convert a image from one format to another and simultaneously resize it.

convert-wallpaper-format-and-size-examples


More in Tux Machines

Red Hat News

  • Improving Storage Performance with Ceph and Flash
    Ceph is a storage system designed to be used at scale, with clusters of Ceph in deployment in excess of 40 petabytes today. At LinuxCon Europe, Allen Samuels, Engineering Fellow at Western Digital, says that Ceph has been proven to scale out reasonably well. Samuels says, “the most important thing that a storage management system does in the clustered world is to give you availability and durability,” and much of the technology in Ceph focuses on controlling the availability and the durability of your data. In his presentation, Samuels talks not just about some of the performance advantages to deploying Ceph on Flash, but he also goes into detail about what they are doing to optimize Ceph in future releases.
  • Ceph and Flash by Allen Samuels, Western Digital
  • Red Hat Opens Up OpenShift Dedicated to Google Cloud Platform
    When businesses and enterprises begin adopting data center platforms that utilize containerization, then and only then can we finally say that the container trend is sweeping the planet. Red Hat’s starter option for containerization platforms is OpenShift Dedicated — a public cloud-based, mostly preconfigured solution, which launched at this time last year on Amazon AWS.
  • Volatility Numbers in View for Red Hat, Inc. (NYSE:RHT)

Leftovers: OSS and Sharing

  • Rhizome is working on an open-source tool to help archive digital content
    "The stability of this kind of easy archiving for document storage, review and revision is a great possibility, but the workflow for journalists is very specific, so the grant will allow us to figure out how it could function." Another feature of Webrecorder that journalists might find appealing, and one of the software's core purposes, is to preserve material that might be deleted or become unavailable in time. However, the tool is currently operated under a Digital Millennium Copyright Act (DMCA) Takedown policy. This means any individual can ask for a record of their web presence or materials to be removed, so Rhizome will be working to "answer the more complicated questions and figure out policies" around privacy and copyright with the latest round of funding.
  • An ode to releasing software
    There is one particular moment in every Free and Open Source Software project: it’s the time when the software is about to get released. The software has been totally frozen of course, QA tests have been made, all the lights are green; the website still needs to be updated with the release notes, perhaps some new content and of course the stable builds have to be uploaded. The release time is always a special one. The very day of the release, there is some excitement and often a bit of stress. The release manager(s), as well as everyone working on the project’s infrastructure are busy making sure everything is ready when the upload of the stable version of the software, binaries and source, has been completed. In many cases, some attention is paid to the main project’s mirror servers so that the downloads are fluid and work (mostly) flawlessly as soon as the release has been pushed and published.
  • Diversity Scholarship Series: My Time at CloudNativeCon 2016
    CloudNativeCon 2016 was a wonderful first conference for me and although the whirlwind of a conference is tiring, I left feeling motivated and inspired. The conference made me feel like I was a part of the community and technology I have been working with daily.
  • WordPress 4.7 Content Management System Provides New Design Options
    WordPress is among the most widely used open-source technologies in the world, powering more than 70 million websites. WordPress 4.7 was released Dec. 6, providing a new milestone update including new features for both users and developers. As is typically the case with new WordPress releases, there is also a new default theme in the 4.7 update. The 2017 theme provides users with a number of interesting attributes including the large feature image as well as the ability to have a video as part of the header image. The Theme Customizer feature enables users to more intuitively adjust various elements of a theme, to fit the needs of websites that use will upgrade to WordPress 4.7. In addition, the new custom CSS (Cascading Style Sheets) feature within a theme preview lets users quickly see how style changes will change the look of a site. As an open-source project, WordPress benefits from participation of independent contributors and for the 4.7 release there were 482 contributors. In this slideshow eWEEK takes a look at some of the highlights of the WordPress 4.7 release.
  • Psychology Professor Releases Free, Open-Source, Preprint Software
    The Center for Open Science, directed by University of Virginia psychology professor Brian Nosek, has launched three new services to more quickly share research data as the center continues its mission to press for openness, integrity and reproducibility of scientific research. Typically, researchers send preprint manuscripts detailing their research findings to peer-reviewed academic journals, such as Nature and Science. The review process can take months or even years before publication – if the research is published at all. By contrast, “preprinting,” or sharing non-peer-reviewed research results online, enables crucial data to get out to the community the moment it is completed. That, said Nosek, is critical.
  • Integral Ad Science Launches Open Source SDK to Drive Mobile Innovation for the Advertising Industry
  • Tullett Prebon Information, Quaternion and Columbia University form open source risk collaboration
  • Tullett Prebon Information And Quaternion Risk Management Partner To Enhance Transparency And Standardisation In Risk Modelling – Partnership Fuels Columbia University Research To Improve Understanding Of Systemic Risk
  • Integral Ad Science Partners with Google, Others for Open Source Viewability
  • DoomRL creator makes free roguelike open-source to try and counter Zenimax legal threat
  • DoomRL Goes Open-Source in Face of Copyright Claims
    Earlier this week, ZeniMax Medi hit DoomRL, a popular roguelike version of the original first-person shooter, with a cease-and-desist order. This order instructed producer ChaosForge to remove the free downloadable game to prevent further legal action. Instead of taking it down, co-creator Kornel Kisielewicz turned the game open-source.
  • This Indian software company just partnered with the world’s biggest open source community
    In what can be called a major motivation for Indian tech firms, Amrut Software, an end-to-end Software, BPO services and solutions provider has become a GitHub distributor for India region. GitHub hosts world’s biggest open source community along with the most popular version control systems, configuration management and collaboration tools for software developers. It has some of the largest installations of repositories in the world.
  • Python 3.6 released with many new improvements and features
    Python,the high-level interpreted programming language is now one of the most preferred programming language by beginners and professional-level developers.So,here Python 3.6 is now available with many changes,improvements and of course the ease of Python was not left in the work list.

Security Leftovers