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CLI Reference

All commands are available as undatum <command> or the shorter data alias (data convert … is identical to undatum convert …).

Use undatum <command> --help for the live flag list. Flags that appear on many commands (--flatten-nested, --on-error, --filter, --table, --quotechar) are documented under Shared CLI options.

Convert and I/O

CommandPage
convert/commands/convert
repack/commands/repack
flatten/commands/flatten
formats/commands/formats
Shared flags/commands/shared-options

Inspect

CommandPage
analyze/commands/analyze
headers/commands/headers
sniff/commands/sniff
count/commands/count
head/commands/head
tail/commands/tail
table/commands/table
stats/commands/stats
profilealias of stats/commands/stats
frequency/commands/frequency
uniq/commands/uniq

Transform

CommandPage
select/commands/select
sort/commands/sort
sample/commands/sample
search/commands/search
dedup/commands/dedup
fill/commands/fill
rename/commands/rename
explode/commands/explode
replace/commands/replace
cat/commands/cat
join/commands/join
diff/commands/diff
exclude/commands/exclude
transpose/commands/transpose
slice/commands/slice
fmt/commands/fmt
split/commands/split
enum/commands/enum
reverse/commands/reverse
fixlengths/commands/fixlengths
apply/commands/apply
mask/commands/mask

Quality and documentation

CommandPage
validate/commands/validate
schema/commands/schema
schema-bulk/commands/schema-bulk
doc/commands/doc
documentalias of doc/commands/doc
schemedeprecated; use schema --format cerberus/commands/schema

SQL and visualization

CommandPage
sql/commands/sql
plot/commands/plot

Extract

CommandPage
extract/commands/extract

Packaging and pipelines

CommandPage
package/commands/package
pipeline/commands/pipeline
examples/commands/examples

Databases

CommandPage
ingest/commands/ingest
db/commands/db

Interactive and API

CommandPage
tui/commands/tui
web/commands/web
api/commands/api

AI and agents

CommandPage
ai/commands/ai
mcp/commands/mcp

Extensibility

CommandPage
plugins/commands/plugins
config/commands/config