Homebrew Audit Skill
Quickly audit your Homebrew installation for outdated packages, cleanup opportunities, and health issues.
Usage
# Full audit (outdated + cleanup + doctor + summary)
bash scripts/brew-audit.sh
# Specific sections
bash scripts/brew-audit.sh --section outdated
bash scripts/brew-audit.sh --section cleanup
bash scripts/brew-audit.sh --section doctor
# JSON output (outdated only)
bash scripts/brew-audit.sh --json --section outdated
What It Checks
📦 Outdated Packages
Lists all formulae and casks with newer versions available, with current → available version info.
🧹 Cleanup Opportunities
Shows how many old versions/downloads can be removed and estimated disk savings. Run brew cleanup to reclaim.
🩺 Health Check
Runs brew doctor to detect:
- Formulae with no source (orphaned kegs)
- Deprecated/disabled packages needing replacement
- Permission issues, broken symlinks, config problems
📊 Summary
Total formulae, casks, and Homebrew prefix.
When to Use
- Periodic system maintenance (weekly/monthly)
- Before major upgrades
- When disk space is low
- After noticing build failures (doctor check)
Updating Packages
After reviewing the audit:
brew upgrade # upgrade all outdated
brew upgrade <formula> # upgrade specific package
brew cleanup # remove old versions
