# ku1ik/stderred

stderr in red

Repository: https://github.com/ku1ik/stderred
Canonical: https://ross.abutalabs.com/products/stderred
Language: C
License: MIT
License Family: permissive
Last push: 2026-04-21T21:08:34+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 78, release rhythm 35, longevity 100
- inputs: {"age_days": 5416, "days_push": 134, "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 1022, forks 117 (observed 2026-08-28T04:03:16.053370+00:00)

## What it is
A shared library that hooks libc write and stream functions to colorize all stderr output in red via ANSI escape codes. It works through LD_PRELOAD/DYLD_INSERT_LIBRARIES without recompiling existing binaries.

## Use cases
- make stderr output red in terminal
- distinguish stderr from stdout visually
- colorize error output of any command without recompiling
- debug build tool warnings and errors more easily
- hook libc write to color fd 2 output

## When to choose
- you want stderr visually distinct from stdout across all terminal programs
- you cannot modify or recompile the tools producing stderr output
- you work on Linux, FreeBSD, or macOS and want a zero-config shell tweak

## When to avoid
- you need stderr colorization on Windows
- you rely on SIP-protected macOS system binaries, which ignore DYLD_INSERT_LIBRARIES
- you cannot tolerate LD_PRELOAD side effects or multi-arch library complexity

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: developer-tools, terminal-ui, logging
- domain: developer-tools
- platform: bsd, cli
- tags: stderr-colorization, ld-preload, ansi-escape-codes, shared-library, command-line, linux, macos

## Member repositories
- ku1ik/stderred (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:16.053370+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 2026-08-30T07:08:44.868572+00:00, confidence not recorded.
  - readme: https://github.com/ku1ik/stderred (fetched 2026-08-28T04:03:16.053370+00:00, sha cbf2bdf46679)
- Data as of 2026-08-30T08:39:29.467469+00:00.