# Overview of directory
ls -la [directory]

# Count file types
find [directory] -type f | sed 's/.*\.//' | sort | uniq -c | sort -rn

# Largest files
du -sh [directory]/* | sort -rh | head -20

# Files modified this week
find [directory] -type f -mtime -7

# By hash (exact duplicates)
find [directory] -type f -exec md5sum {} \; | sort | uniq -d

# By name
find [directory] -type f -printf '%f\n' | sort | uniq -d

# By size
find [directory] -type f -printf '%s %p\n' | sort -n | uniq -D -w 10

Downloads/
├── Documents/     # PDF, DOCX, TXT
├── Images/        # JPG, PNG, SVG
├── Videos/        # MP4, MOV
├── Archives/      # ZIP, TAR, DMG
├── Code/          # Projects
└── ToSort/        # Needs decision

Documents/
├── Work/
│   ├── Projects/
│   ├── Reports/
│   └── Archive/
└── Personal/
    ├── Finance/
    ├── Medical/
    └── Archive/

Photos/
├── 2024/
│   ├── 01-January/
│   ├── 02-February/
│   └── ...
├── 2023/
└── Unsorted/

# Create structure
mkdir -p "path/to/new/folders"

# Move files
mv "old/path/file.pdf" "new/path/file.pdf"

# Batch move by extension
find . -name "*.pdf" -exec mv {} Documents/ \;