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infrastructure/ci-pipelines-how-a-computer-decides-a-change-is-safe-to-merge.md
CI pipelines: how a computer decides a change is safe to merge
Push a change and a green tick or a red cross appears a minute later. How does a machine decide? It does not understand your code. It reads…
tools/path-why-a-terminal-says-command-not-found-for-a-program-you-installed.md
PATH: why a terminal says command not found for a program you installed
You installed a tool, but the terminal says `command not found`, or it runs an older version. The cause is almost always `PATH`: a short…