On macOS zsh the curl command needs to be invoked explicitly with bash

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The course notes show bash commands for curl such as
curl -X PUT localhost:8321/unicorn_spotted?location=moon\&brightness=100

On macOS, if running zsh then this command does not work so you need to explicitly invoke bash as follows:

/bin/bash -c "curl -X PUT localhost:8321/unicorn_spotted?location=moon\&brightness=100"