# holman/spark

▁▂▃▅▂▇ in your shell.

Repository: https://github.com/holman/spark
Canonical: https://ross.abutalabs.com/products/holman-spark
Homepage: http://zachholman.com/spark/
Language: Shell
License: MIT
License Family: permissive
Last push: 2022-05-07T10:27:15+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5405, "days_push": 1579, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6066, forks 287 (observed 2026-08-28T04:09:34.742112+00:00)

## What it is
spark is a tiny POSIX shell script that renders Unicode sparkline graphs (▁▂▃▅▇) from a list of numbers passed on the command line or via a pipe. It is designed to compose with other Unix tools like git, awk, and curl.

## Use cases
- visualize numbers as sparklines in the terminal
- graph git commit counts per author in the shell
- pipe csv data into a quick terminal chart
- add a mini graph to a shell prompt
- quickly eyeball trends in command output

## When to choose
- you want zero-dependency, single-file sparklines in any shell pipeline
- you need tiny inline charts for prompts or scripts
- you work in Unix pipelines and want quick visual summaries

## When to avoid
- you need axes, labels, or interactive charts
- you want rich plotting libraries with multiple chart types
- your terminal font lacks Unicode block characters

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: data-visualization, cli, developer-tools
- domain: data-visualization, developer-tools
- platform: cli, cross-platform
- tags: sparklines, shell-script, terminal, unix-pipes, command-line, macos, linux

## Member repositories
- holman/spark (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:34.742112+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:48:43.343521+00:00, confidence not recorded.
  - readme: https://github.com/holman/spark (fetched 2026-08-28T04:09:34.742112+00:00, sha 85a153beeafe)
  - homepage: http://zachholman.com/spark/ (fetched 2026-08-29T08:45:03.318710+00:00, sha dbe5b8d40a1e)
- Data as of 2026-08-30T08:39:29.467469+00:00.