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Thinking Outside The (Linux) Box

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Linux

My washing machine has a leaky valve, it has had this problem for a while now. It comes and goes. Sometimes I hear it dripping water into the tank, sometimes I don’t. Now, some folks would run to call a service technician, or the more “DIY-minded” might attempt to replace the offending valve themselves. I, on the other hand, am content to let it drip until it finally fails completely which could be next week or five years from now. The drips of water are caught by the tank and are not being wasted or turning into an annoying puddle on the floor, so why worry myself about it? Every time I start a new load of clothes, which is quite frequently because I am doing laundry for three kids and two adults around here, the little bit of collected leak water is mixed with fresh and does its intended duty washing the clothes. I’m fine with that.

So, what does this have to do with Linux or computers in general? It illustrates an important truth about technology and that is that it is not and never will be perfect. Anyone who wants to use any technology to make life easier or to accomplish a task must be prepared to live with imperfection and learn how to work around it. If you can’t handle that concept then you will find yourself very frustrated. Sometimes a little analytical thinking and judicious application of pragmatic logic are necessary to get the most from a complex system. Anyone not prepared to roll with the changes is doomed to failure. The Linux ecosystem is vast and developers are constantly working to find new ways to get things done, deprecating the old and embracing the new. It will never be perfect, it will never be one-size-fits-all. The number of choices are dizzying and that is a good thing because it gives you options to deal with these little imperfections and stumbling blocks as the present themselves. (Read the rest at Freedom Penguin)

More in Tux Machines

Security: VPNFilter, Encryption in GNU/Linux, Intel CPU Bug Affecting rr Watchpoints

  • [Crackers] infect 500,000 consumer routers all over the world with malware

    VPNFilter—as the modular, multi-stage malware has been dubbed—works on consumer-grade routers made by Linksys, MikroTik, Netgear, TP-Link, and on network-attached storage devices from QNAP, Cisco researchers said in an advisory. It’s one of the few pieces of Internet-of-things malware that can survive a reboot. Infections in at least 54 countries have been slowly building since at least 2016, and Cisco researchers have been monitoring them for several months. The attacks drastically ramped up during the past three weeks, including two major assaults on devices located in Ukraine. The spike, combined with the advanced capabilities of the malware, prompted Cisco to release Wednesday’s report before the research is completed.

  • Do Not Use sha256crypt / sha512crypt - They're Dangerous

    I'd like to demonstrate why I think using sha256crypt or sha512crypt on current GNU/Linux operating systems is dangerous, and why I think the developers of GLIBC should move to scrypt or Argon2, or at least bcrypt or PBKDF2.

  • Intel CPU Bug Affecting rr Watchpoints
    I investigated an rr bug report and discovered an annoying Intel CPU bug that affects rr replay using data watchpoints. It doesn't seem to be hit very often in practice, which is good because I don't know any way to work around it. It turns out that the bug is probably covered by an existing Intel erratum for Skylake and Kaby Lake (and probably later generations, but I'm not sure), which I even blogged about previously! However, the erratum does not mention watchpoints and the bug I've found definitely depends on data watchpoints being set. I was able to write a stand-alone testcase to characterize the bug. The issue seems to be that if a rep stos (and probably rep movs) instruction writes between 1 and 64 bytes (inclusive), and you have a read or write watchpoint in the range [64, 128) bytes from the start of the writes (i.e., not triggered by the instruction), then one spurious retired conditional branch is (usually) counted. The alignment of the writes does not matter, and it's not related to speculative execution.

In Memoriam: Robin "Roblimo" Miller, a Videographer and Free Software Champion

Videographer Robin Roblimo Miller

Robin "Roblimo" Miller was a clever, friendly, and very amicable individual who everyone I know has plenty of positive things to say about. I had the pleasure of speaking to him for several hours about anything from personal life and professional views. Miller was a very knowledgeable person whose trade as a journalist and video producer I often envied. I have seen him facing his critics in his capacity as a journalist over a decade ago when he arranged a debate about OOXML (on live radio). Miller, to me, will always be remembered as a strong-minded and investigative journalist who "did the right thing" as the cliché goes, irrespective of financial gain -- something which can sometimes be detrimental to one's longterm health. Miller sacrificed many of his later years to a cause worth fighting for. This is what we ought to remember him for. Miller was - and always will be - a FOSS hero.

May everything you fought for be fulfilled, Mr. Miller. I already miss you.

Today in Techrights

Tux Machines Privacy Statement

Summary: Today, May 25th, the European General Data Protection Regulation (GDPR) goes into full effect; we hereby make a statement on privacy AS a matter of strict principle, this site never has and never will accumulate data on visitors (e.g. access logs) for longer than 28 days. The servers are configured to permanently delete all access data after this period of time. No 'offline' copies are being made. Temporary logging is only required in case of DDOS attacks and cracking attempts -- the sole purpose of such access. Additionally, we never have and never will sell any data pertaining to anything. We never received demands for such data from authorities; even if we had, we would openly declare this (publicly, a la Canary) and decline to comply. Privacy is extremely important to us, which is why pages contain little or no cross-site channels (such as Google Analytics, 'interactive' buttons for 'social' media etc.) and won't be adding any. Google may be able to 'see' what pages people visit because of Google Translate (top left of every page), but that is not much worse than one's ISP 'seeing' the same thing. We are aware of this caveat. Shall readers have any further questions on such matters, do not hesitate to contact us.