Spark: Sparklines in your shell

Spark is a tiny shell script by Jason A. Donenfeld that renders sparklines—compact, inline bar charts made of Unicode block characters—right in your terminal. It takes a series of numbers and outputs a visual representation that fits on a single line, making it perfect for quick data checks in scripts or command-line workflows. This project is a minimal, practical tool for developers who want instant visual feedback without leaving the shell.