The fundamental problem with program maintenance is that fixing a defect has a substantial chance of introducing another. So the whole process is two steps forward and one step back. Why aren't defects fixed more cleanly? First, even a subtle defect shows itself as a local failure of some kind. In fact it often has system-wide ramifications, usually nonobvious. Any attempt to fix it with minimum effort will repair the local and obvious, but unless the structure is pure or the documentation very fine, the far-reaching effects of the repair will be overlooked.

— Fred Brooks

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🐚 Shell Games — Làm chủ terminal, làm chủ công cụ (Pragmatic Programmer #17)

27 tháng 6, 2026 • Phong

Shell Games (Topic 17) trong The Pragmatic Programmer so sánh terminal với bàn làm việc của người thợ mộc. Tại sao lập trình viên cần làm chủ command line?

sach pragmatic-programmer shell terminal command-line software-engineering

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