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ncdu

ncdu

An interactive curses-based version of the well-known du(1).

Runs as ncdu|macOS, Linux|dev.yorhel.nl
Open form in Otty otty.toml

Command form

ai-draft · 2 tasks · 10 fields

Open the ncdu disk usage browser on a directory. Sorting, colours, export/import files and the delete command are left out.

Opens the form; the finished command lands at your prompt, unrun
Run in Otty
otty gui ncdu
Analyze disk usageExample values, fixed in this page — nothing here reaches a terminal
Basic
Directory*
directory
Stay on one filesystem
--one-file-system
Exclude pattern
string
Read-only (disable deleting)
-r
TasksEach one presets the form for one job
Browse a directory
directoryone_file_systemexcluderead_only
Scan one filesystem, read-only
directoryone_file_systemread_onlyexclude
ParametersOnly these flags are editable in the form
Directory
path · positional 0
Stay on one filesystem
boolean
--one-file-system-x
Exclude pattern
string · repeatable
--exclude
Follow symlinks
boolean
--follow-symlinks-L
Threads
integer
--threads-t
Extended information
boolean
--extended-e
Use powers of 1000 (SI)
boolean
--si
Show apparent size
boolean
--apparent-size
Read-only (disable deleting)
boolean
-r
Enable file deletion
boolean
--enable-delete
SourcesEvery flag above is checked against these
man
-x, --one-file-system --cross-file-system --exclude pattern -L, --follow-symlinks, --no-follow-symlinks -t, --threads -e, --extended, --enable-delete, --disable-delete -r --si, --no-si --disk-usage, --apparent-size --show-hidden, --hide-hidden -q, --slow-ui-updates, --fast-ui-updates
manualncdu 2 manual (2026-10-27)

dev.yorhel.nl

Before it fills your prompt, Otty checks the installed ncdu against its version. A form that does not match your version is not offered.