# Linux Command Line Utilities for Evaluating Disk Usage The `du` utility will show you used disk space of a folder. `du -h --max-depth=1 /var/lib/docker | sort -h -r` - `-h` will use the appropriate units for used space instead of bytes only (K/M/G) - `--max-depth 1` will limit recursion to the current directory - `sort -h -r` will pipe the output of `du` to `sort` so that the most used folders are shown first --- `df -h` will show the mounted file systems along with used capacity info (`-h` will use appropriate units, same as above).