iStats

iStats is a command‑line utility for macOS that retrieves hardware metrics such as CPU temperature, fan speeds, and battery details. It provides commands to display all statistics or specific values, and supports optional output formats like sparklines, label‑free values, or JSON for monitoring systems. Users can scan for additional SMC sensors, enable or disable individual keys, and request data in Fahrenheit if desired.

The tool is aimed at developers, system administrators, and power users who need quick, scriptable access to macOS hardware information from the terminal. It also includes a mode that outputs JSON compatible with Zabbix low‑level discovery, allowing integration with monitoring infrastructures.

iStats is distributed as an open‑source Ruby gem, installed via `gem install`. It runs on a range of macOS versions and Ruby releases, and the repository accepts contributions through standard GitHub fork‑and‑pull‑request workflow.