Homebrew maintenance and cleanup

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# List all outdated packages
brew outdated

# Show what will be upgraded
brew outdated --verbose

# Check specific package
brew outdated <package-name>

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# Update Homebrew itself (fetch latest package info)
brew update

# Upgrade all outdated packages
brew upgrade

# Upgrade specific package only
brew upgrade <package-name>

# Update Homebrew + upgrade all packages (common combo)
brew update && brew upgrade

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# List packages installed as dependencies but no longer needed
brew autoremove --dry-run

# Actually remove them
brew autoremove

# Alternative: list all dependencies no longer needed
brew leaves

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# Remove old versions of installed packages
brew cleanup

# See what will be cleaned without removing
brew cleanup --dry-run

# Clean up everything older than 30 days
brew cleanup --prune=30

# Remove ALL old versions (aggressive)
brew cleanup -s

# Check how much space you'll save
brew cleanup --dry-run | grep "=>"

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# Diagnose potential issues
brew doctor

# See what's taking up space
brew info --installed | grep "GB\|MB"

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# List all installed packages
brew list

# List top-level packages (not dependencies)
brew leaves

# Show package details
brew info <package-name>

# Show package dependencies
brew deps <package-name>

# Show what depends on a package
brew uses <package-name> --installed

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# Full cleanup in one go
brew update && \
brew upgrade && \
brew autoremove && \
brew cleanup --prune=30 && \
brew doctor

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# Pin a package to current version
brew pin <package-name>

# Unpin it
brew unpin <package-name>

# List pinned packages
brew list --pinned