name: disk-usage description: Analyze disk space usage and filesystem information including mounts, usage, and large files

Disk Usage Skill

Use this skill to analyze disk space and filesystem usage on Linux systems.

Quick Start

Run the included script for a disk usage overview:

./scripts/diskinfo.sh

Manual Commands

Filesystem Overview

• df -h - Disk space usage for all mounted filesystems (human-readable)
• df -i - Inode usage (number of files)
• lsblk - Block device tree (disks, partitions)
• mount - Currently mounted filesystems

Directory Size Analysis

• du -sh /path - Total size of a directory
• du -h --max-depth=1 /path - Size of immediate subdirectories
• du -ah /path | sort -rh | head -20 - Largest files/directories

Finding Large Files

• find /path -type f -size +100M - Files larger than 100MB
• find /path -type f -size +1G - Files larger than 1GB
• ls -lhS /path | head -20 - List files sorted by size (largest first)

Disk Information

• cat /proc/partitions - Partition table
• cat /proc/mounts - Mount information
• stat -f /path - Filesystem statistics

Tips

• Always use -h for human-readable sizes
• The du command can be slow on large directories
• Use --max-depth=1 to limit recursion depth
• Root filesystem (/) usage above 90% may cause issues