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A mix of two halves Sevan Janiyan sevan@{NetBSD,FreeBSD}.org A - PowerPoint PPT Presentation

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A mix of two halves Sevan Janiyan sevan@{NetBSD,FreeBSD}.org A UNIX course holly war 101: interpretation of intention & implementation without documentation. Note: Best fought over code 35 years or older Often the reason for a

  1. A mix of two halves Sevan Janiyan sevan@{NetBSD,FreeBSD}.org

  2. A UNIX course holly war 101: interpretation of intention & implementation without documentation. Note: Best fought over code 35 years or older

  3. “Often the reason for a particular implementation technique becomes clear when the historical reasons are described” –Richard Stevens (Advanced Programming in UNIX Environment)

  4. “Quality happens only when someone is responsible for it.” –Poul-Henning Kamp (A Generation Lost in the Bazaar)

  5. “A good programmer is someone who looks both ways before crossing a one-way street.” –Doug Linder

  6. Reading • An Oral history of Unix • A Research UNIX Reader: Annotated Excerpts from the Programmer’s Manual, 1971-1986 • Design of design - Frederick P Brooks • The Fifth Discipline - Peter Senghe

  9. Watching • Brett Victor - Inventing on Principle • Alan Kay - Inventing the future (most recently, many more) • Bryan Cantrill - Leadership Without Management: Scaling Organisations by Scaling Engineers

  10. Resources • TUHS archive • Éric Lévénez history of Unix • man.cat-v.org

  12. Subtleties • Testing and test suites • Bad systems harbour bad habits • Respect for the time of others • Filing in the whole picture • Evolution of ideas vs Trash & replace

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