Unix philosophy ---取自The art of unix programming

  1. Rule of Modularity: Write simple parts connected by clean interfaces.
  1. Rule of Clarity: Clarity is better than cleverness.
  1. Rule of Composition: Design programs to be connected to other programs.
  1. Rule of Separation: Separate policy from mechanism; separate interfaces from engines.
  1. Rule of Simplicity: Design for simplicity; add complexity only where you must.
  1. Rule of Parsimony: Write a big program only when it is clear by demonstration that nothing
    else will do.
  1. Rule of Transparency: Design for visibility to make inspection and debugging easier.
  1. Rule of Robustness: Robustness is the child of transparency and simplicity.
  1. Rule of Representation: Fold knowledge into data so program logic can be stupid and robust.
  1. Rule of Least Surprise: In interface design, always do the least surprising thing.
  1. Rule of Silence: When a program has nothing surprising to say, it should say nothing.
  1. Rule of Repair: When you must fail, fail noisily and as soon as possible.
  1. Rule of Economy: Programmer time is expensive; conserve it in preference to machine time.
  1. Rule of Generation: Avoid hand-hacking; write programs to write programs when you can.
  1. Rule of Optimization: Prototype before polishing. Get it working before you optimize it.
  1. Rule of Diversity: Distrust all claims for “one true way”.
  1. Rule of Extensibility: Design for the future, because it will be here sooner than you think.