# phpman > man > gencfu(1)

[GENCFU(1)](https://www.chedong.com/phpMan.php/man/GENCFU/1/markdown)                                  ICU 70.1 Manual                                 [GENCFU(1)](https://www.chedong.com/phpMan.php/man/GENCFU/1/markdown)



## NAME
       **gencfu** - Generates Unicode Confusable data files

## SYNOPSIS
       **gencfu**  [  **-h**,  **-?**,  **--help**  ]  [ **-V**, **--version** ] [ **-c**, **--copyright** ] [ **-v**, **--verbose** ] [ **-d**,
       **--destdir** _destination_ ] [ **-i**, **--icudatadir** _directory_ ] **-r**, **--rules**  _rule-file_  **-w**,  **--wsrules**
       _whole-script-rule-file_ **-o**, **--out** _output-file_

## DESCRIPTION
       **gencfu**  reads  confusable character definitions in the input file, which are plain text files
       containing confusable character definitions in the input format defined by Unicode UAX39  for
       the  files _confusables.txt_ and _confusablesWholeScript.txt._  This source (.txt) format is also
       accepted by ICU spoof detectors.  The files must be encoded in utf-8 format, with or  without
       a BOM.  Normally the output data file has the **.cfu** extension.

## OPTIONS
### -h -? --help
              Print help about usage and exit.

### -V --version
              Print the version of **gencfu** and exit.

### -c --copyright
              Embeds the standard ICU copyright into the _output-file_.

### -v --verbose
              Display extra informative messages during execution.

### -d --destdir
              Set the destination directory of the _output-file_ to _destination_.

### -i --icudatadir
              Look  for any necessary ICU data files in _directory_.  For example, the file **pnames.icu**
              must be located when ICU's data is not built as a shared  library.   The  default  ICU
              data directory is specified by the environment variable **ICU**___**DATA**.  Most configurations
              of ICU do not require this argument.

### -r --rules
              The source file to read.

### -w --wsrules
              The whole script source file to read.

### -o --out
              The output data file to write.

## VERSION
       1.0

## COPYRIGHT
       Copyright (C) 2009 International Business Machines Corporation and others



ICU MANPAGE                                  24 May 2009                                   [GENCFU(1)](https://www.chedong.com/phpMan.php/man/GENCFU/1/markdown)