You can also configure the agent and exporter via command line arguments or environment variables. The net result is the ability to gather telemetry data from a Java application without ... samplers ...

Viper does the following for you: Find, load, and unmarshal a configuration file in JSON, TOML, YAML, HCL, INI, envfile or Java properties formats ... the event that a key hasn't been set via config ...

The PATH variable is a special environment variable that stores a list of directories. One can think of it as a set of treasure maps, where each map points to a folder containing executable programs.

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