Browsing

dfdu                      # browse the current directory
dfdu ~                    # browse a directory
dfdu --disks              # pick a disk first
dfdu --type video ~       # only video files
dfdu --remote server /srv # another host over ssh (dfdu installed there)

Keys

Keys follow ncdu. Press ? in the app for the full list.

Key	Action	Key	Action
↑↓←→ / hjkl	Move, open, go back	1 2	List, treemap
s n C M	Sort by size, name, count, date	3	Cleanup
T	Tree mode	4	Duplicates
/ t	Filter by name, by file type	5	Largest files
v	Mark a range	d	Move to Trash
o y	Open in file manager, copy path	D	Delete permanently
r	Rescan	q	Quit

Unreadable entries are marked ! with the reason. Press ! to list them all.

Views

The cleanup view (3) lists what the cleanup rules found, with how safe each match is to delete and how much it frees. The treemap (2), tree mode (T), duplicates (4) and largest files (5) are one key away from the list.

Mounts

Like ncdu -x, a scan stays on one filesystem. Add --cross-mounts for other local filesystems and --network for network mounts.

The scan cache

Scans that took 3 s or more are cached, so the next dfdu PATH opens at once and refreshes in the background (cached 3 h ago, refreshing in the header). On macOS, Windows and btrfs only the changed directories are read again.

A cache is used for 14 days and the cache keeps at most 1 GiB, readable only by you. --no-cache scans afresh, DFDU_CACHE=0 turns it off, dfdu cache list and dfdu cache clear manage it.

Deleting

Deletes go to the Trash. Permanent deletes (D) ask you to type delete. --read-only removes the delete keys.