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Howtos

Forget About Photoshop: Five CSS Hacks to Help You Stop Using Images

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Howtos

When you are laying out a new design for a web site, the last thing you generally want to do is create a ton of images for the layout. You might make a rounded corner or shadowed text in Photoshop, but that is wasted time if the client doesn’t like it or the website doesn’t turn out as expected.

A way through SourceForge

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Howtos

I made a simple (should be) tutorial from creating of a project until releasing it on SourceForge.net

Qt for beginners

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Howtos

I made some tutorials how to use the Qt Creator and how to begin with Qt. Also a example how to convert binary numbers into decimal and back.

Ubuntu's way to get bleeding edge kernel

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Howtos

Ubuntu’s release cycle is 6 months. Though this seems to be aggressive cycle, it is not enough for someone who depends on bleeding edge kernel which may support some new hardware or damn smart feature. In this scenario you need to wait till next release of ubuntu, if you are not comfortable in downloading the vanilla kernel...

How to add Awn main menu applet in AWN 0.3.2

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Howtos

The latest Awn 0.3.2 has seen a few applets been removed, one of them being the good old AWN main menu. This is a quick guide to run it in the new 0.3.2

Could not boot into XP from GRUB and how i found a work around

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Howtos

First, GRUB was erased. After fixing it, XP did not boot from GRUB owing to ‘ERROR 12′. Lastly, How I could fix both, rather discovered work-around for some part. I am a newbie yet and see if I've done justice to the solution.

“Can’t locate module” Error in Linux and Data Loss

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Howtos

When you start your Linux system, at boot time, the process may get terminated and you might come across with the following error message:
“Can't Locate Module ”
After this error message, the system does not boot and none of your data can be accessed from it.

How to do md5sum check

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Howtos

"md5sum is a computer program that calculates and verifies 128-bit MD5hashes, as described in RFC 1321. The MD5 hash (or checksum) functions as a compact digital fingerprint of a file." ~Wikipedia
In simple words, if you download a Linux Distro and the md5sum result matches the one provided by the web site, your file has practically been downloaded OK.

So, how do we do this md5sum?


Rest of article

Linux Cheat Sheets (awk, ed, sed, perl, bash, screen)

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Howtos

I have made several linux cheat sheets to speed up the learning process of some tools.

Recently I decided to put them on my blog.

Here is a link to all the cheat sheets on my blog:
cheat sheets at catonmat (my blog)

They include:

How to get SLAB working with SMART

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Howtos

If i had to name one thing that i sincerely hate about openSUSE, it'd have to be YaST's package manager with its zypper backend, so, as you may have guessed from the title, i use Smart instead, and i don't think i'm the only one here.

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More in Tux Machines

Leftovers: Software

  • A Quick Hands-On With Chatty, A Desktop Twitch Chat Client
    Chatty is a desktop Twitch Chat client for Windows, macOS and Linux written in Ja
  • HP Linux Imaging and Printing 3.16.8 Adds Support for Linux Mint 18, Fedora 24
    The open-source HP Linux Imaging and Printing (HPLIP) project has been updated on August 29, 2016, to version 3.16.8, a maintenance update that adds support for new printers and GNU/Linux operating systems. According to the release notes, HP Linux Imaging and Printing 3.16.8 adds support for new all-in-one HP printers, including HP OfficeJet Pro 6970, HP OfficeJet Pro 6960, HP OfficeJet 250 Mobile, HP DeskJet 3700, as well as HP DeskJet Ink Advantage 3700. Also new in the HPLIP 3.16.8 update is support for the recently released Linux Mint 18 "Sarah" Cinnamon, MATE, Xfce, and the upcoming KDE editions, the Fedora 24 Linux operating system, as well as the Debian GNU/Linux 8.5 "Jessie" distribution. So if you're using any of these OSes, you can now update to the latest HPLIP release.
  • MPlayer-Based MPV 0.20.0 Video Player Released with New Options and Commands
    The popular, open-source, and cross-platform MPV video player software received a new update, version 0.20.0, which comes only two weeks after the previous 0.19.0 maintenance release. MPV 0.20.0 is not a major update, and, according to the release notes, it only implements a couple of new options and commands, such as "--video-unscaled=downscale-big" for changing the aspect ratio. Additionally, the MPlayer-based video playback application also gets the "--image-display-duration" option for controlling the duration of image display, and a new "dcomposition" flag for controlling DirectComposition.
  • FFmpeg 3.1.3 "Laplace" Open-Source Multimedia Framework Now Available for Linux
    The major FFmpeg 3.1 "Laplace" open-source and cross-platform multimedia framework has received recently its third maintenance update, version 3.1.3, which brings updated components. FFmpeg 3.1 was announced two months ago, at the end of June, and it introduced a multitude of new features to make the popular multimedia backend even more reliable and handy to game and application developers. Dubbed Laplace, FFmpeg 3.1 is currently the most advanced FFmpeg release, cut from Git master on June 26, 2016.
  • GNU Scientific Library 2.2 released
    Version 2.2 of the GNU Scientific Library (GSL) is now available. GSL provides a large collection of routines for numerical computing in C. This release contains new linear algebra routines (Pivoted and Modified Cholesky, Complete Orthogonal Decomposition, matrix condition number estimation) as well as a completely rewritten nonlinear least squares module, including support for Levenberg-Marquardt, dogleg, double-dogleg, and Steihaug-Toint methods. The full NEWS file entry is appended below.

today's howtos

Leftovers: OSS

  • Report: If DOD Doesn't Embrace Open Source, It'll 'Be Left Behind'
    Unless the Defense Department and its military components levy increased importance on software development, they risk losing military technical superiority, according to a new report from the Center for a New American Security. In the report, the Washington, D.C.-based bipartisan think tank argues the Pentagon, which for years has relied heavily on proprietary software systems, “must actively embrace open source software” and buck the status quo. Currently, DOD uses open source software “infrequently and on an ad hoc basis,” unlike tech companies like Google, Amazon and Facebook that wouldn’t exist without open source software.
  • The Honey Trap of Copy/Pasting Open Source Code
    I couldn’t agree more with Bill Sourour’s article ‘Copy.Paste.Code?’ which says that copying and pasting code snippets from sources like Google and StackOverflow is fine as long as you understand how they work. However, the same logic can’t be applied to open source code. When I started open source coding at the tender age of fourteen, I was none the wiser to the pitfalls of copy/pasting open source code. I took it for granted that if a particular snippet performed my desired function, I could just insert it into my code, revelling in the fact that I'd just gotten one step closer to getting my software up and running. Yet, since then, through much trial and error, I’ve learned a thing or two about how to use open source code effectively.
  • Affordable, Open Source, 3D Printable CNC Machine is Now on Kickstarter
    The appeals of Kickstarter campaigns are many. There are the rewards for backers, frequently taking the form of either deep discounts on the final product or unusual items that can’t be found anywhere else. Pledging to support any crowdfunding campaign is a gamble, but it’s an exciting gamble; just browsing Kickstarter is pretty exciting, in fact, especially in the technological categories. Inventive individuals and startups offer new twists on machines like 3D printers and CNC machines – often for much less cost than others on the market.
  • Open Standards and Open Source
    Much has changed in the telecommunications industry in the years since Standards Development Organization (SDOs) such as 3GPP, ITU and OMA were formed. In the early days of telecom and the Internet, as fundamental technology was being invented, it was imperative for the growth of the new markets that standards were established prior to large-scale deployment of technology and related services. The process for development of these standards followed a traditional "waterfall" approach, which helped to harmonize (sometimes competing) pre-standard technical solutions to market needs.

Leftovers: BSD

  • The Voicemail Scammers Never Got Past Our OpenBSD Greylisting
    We usually don't see much of the scammy spam and malware. But that one time we went looking for them, we found a campaign where our OpenBSD greylisting setup was 100% effective in stopping the miscreants' messages. During August 23rd to August 24th 2016, a spam campaign was executed with what appears to have been a ransomware payload. I had not noticed anything particularly unusual about the bsdly.net and friends setup that morning, but then Xavier Mertens' post at isc.sans.edu Voice Message Notifications Deliver Ransomware caught my attention in the tweetstream, and I decided to have a look.
  • Why FreeBSD Doesn't Aim For OpenMP Support Out-Of-The-Box