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CNPJ

Official interface: use the brutils CLI commands shown below.

Overview

The CNPJ module generates, validates, formats, strips and masks CNPJ values for testing and development workflows.

CLI Commands

brutils cnpj generate
brutils cnpj generate --formatted
brutils cnpj generate --branch 12 --count 5 --unique

brutils cnpj validate 11444777000161
brutils cnpj validate 11.444.777/0001-61 --strict

brutils cnpj format 11444777000161
brutils cnpj strip 11.444.777/0001-61
brutils cnpj mask 11444777000161
brutils cnpj mask 11444777000161 --mask "##.***.***/****-##"

Actions

Action Usage Description
generate brutils cnpj generate [flags] Generate synthetic valid CNPJ values.
validate brutils cnpj validate <value> [--strict] Validate size, digits and optional strict repeated-pattern rejection.
format brutils cnpj format <value> Format a CNPJ as 00.000.000/0000-00.
strip brutils cnpj strip <value> Remove punctuation and keep digits only.
mask brutils cnpj mask <value> [--mask <pattern>] Mask a CNPJ for safe display.

Flags

Flag Applies to Type Description
--formatted generate boolean Return generated values with CNPJ punctuation.
--branch <number> generate string Force a branch identifier. Values are padded to 4 digits.
--count <number> generate integer Generate multiple CNPJ values.
--unique generate boolean Avoid duplicates during batch generation.
--strict validate boolean Reject repeated patterns such as 00000000000000.
--mask <pattern> mask string Use * to hide digits and # to reveal them.

Notes

  • brutils cnpj --help shows examples and usage for the whole module.
  • Generated values are synthetic and algorithmically valid.