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  • Triple-boot Linux, Windows 7 and Windows 10: a comprehensive guide

    (Click to skip Windows history rants to actual guide) In my book, the last decent Windows system ever was 7. From Windows 10 onwards, it’s sad and disgusting finalization of what certain security researcher aptly called “zombification of general-purpose OS” – you as the user/admin/owner have no control whatsoever over that darn thing and are…

  • The tough FX DSLR choice: Nikon D750 or D810 considering night city photography?

    I’ve always shot about a decade-old camera bodies, since only that can I afford. First a then-9-year old Nikon D90, then I’ve upgraded to currently 12 years old D7000 purely to get better low-light, resp. higher-ISO performance. But recently on a Christmas indoor shoot, my DSLR was outshoot at ISO6400 by some darn chinese smartphone!…

  • What car do I have?

    First, ask me what engine. Because that’s the foundation of my choice.

  • From Linux to Mainframe in one day: IBM z/OS complete tutorial

    I’ve spent 14 years on the IBM mainframes. It was and still is an amazing, exotic technology even most IT tech people will never get to touch in their lives. The mainframes may look intimidating, but with a bit of abstraction, aren’t so different from Linux. This complete illustrated tutorial guides newcomers to the z/OS…

  • Crash course into IBM Mainframe’s JCL: like Bash on Linux

    (Part 1 of 2-part IBM z/OS crash course “From Linux to Mainframe in one day”) While mainframes can work interactively, “online”, this is mostly reserved for special applications like the IBM CICS transaction server. Most of the workload runs in so-called “batch processing” mode – running scripts., kind of similar to Cron+Bash combo on Linux….

  • Test-Driven Development (TDD) and Unit tests: the neuroscience behind and the misunderstood fundamental limitations

    Test-Driven Development (TDD) and Unit tests: the neuroscience behind and the misunderstood fundamental limitations

    Having worked both as programmer and senior QA (slash Software Safety), I have a love-hate relationship with TDD and Unit tests. Love because they are superb tools to help developers write much better code… And hate because the volume and damage of ridiculous misconceptions, misunderstandings and overblown assumptions regarding how the TDD/UT can magically replace…