# duf > Disk Usage/Free Utility. > More information: . - List accessible devices: `duf` - List everything (such as pseudo, duplicate or inaccessible file systems): `duf --all` - Only show specified devices or mount points: `duf {{path/to/directory1 path/to/directory2 ...}}` - Sort the output by a specified criteria: `duf --sort {{size|used|avail|usage}}`