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disk-reduction

97 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By nubjs/nub (GitHub) · coding · 4,439 stars · scanned at commit 9b73456

Reclaim disk on the maintainer's Mac when the volume is full or filling — ENOSPC, "no space left on device", a failed build or agent harness, or a routine sweep of Rust build residue. Invoke whenever free space is the problem. Covers the two families that actually hold the space (worktree-private `target/` dirs and orphaned content-hashed shared-target buckets under `~/.cache/nub`), the safety gates that keep a live bucket and the installed `nub-dev` binary alive, and why `du` and `df` disagree…

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'disk-reduction' ] || [ -L ~/.agents/skills/'disk-reduction' ]; then echo 'A skill folder named disk-reduction already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/nubjs/nub' "$d" && git -C "$d" checkout --quiet '9b734566fd36ceed8379f67a92291bc68af60801' -- '.claude/skills/disk-reduction' && mkdir -p ~/.agents/skills && cp -R "$d"/'.claude/skills/disk-reduction' ~/.agents/skills/'disk-reduction' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'disk-reduction' ~/.claude/skills/'disk-reduction' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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