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cracklib-format(8)          Debian GNU/Linux manual         cracklib-format(8)



NAME
       cracklib-format, cracklib-packer, cracklib-unpacker - cracklib dictionary utilities

SYNOPSIS
       cracklib-format file ...

       cracklib-packer cracklib_dictpath

       cracklib-unpacker cracklib_dictpath

DESCRIPTION
       cracklib-format  takes  a  list  of text files each containing a list of words, one per line, It lowercases all
       words, removes control characters, and sorts the lists.  It outputs the cleaned up  list  to  standard  output.
       The text files may be optionally compressed with gzip(1).

       If  you  supply massive amounts of text to cracklib-format you must have enough free space available for use by
       the sort(1) command.  If you do not have 20Mb free in /var/tmp (or whatever temporary area your sort(1) command
       uses),  have  a  look at the /usr/sbin/cracklib-format program which is a sh(1) program.  You can usually tweak
       the sort(1) command to use any large area of disk you desire, by use of the -T option.  cracklib-format  has  a
       hook for this.

       cracklib-packer  reads  from  standard  input  a list of sorted and cleaned words and creates a database in the
       directory and prefix given by the command line argument cracklib_dictpath.  Three files are  created  with  the
       suffixes  of  .hwm,  .pwd,  and .pwi.  These three files are in the format that the FascistCheck(3) subroutine,
       cracklib-unpacker(8), and cracklib-check(8), utilities understand.  The number of words read  and  written  are
       printed on stdout(3).

       cracklib-unpacker reads from the database in the directory and prefix given by the command line argument crack-
       lib_dictpath and outputs on standard output the list of words that make up the database.

       The database is in a binary format generated by the utilities cracklib-format(8) and cracklib-packer(8).  On  a
       Debian system the database is located in the directory /var/cache/cracklib/cracklib_dict and is generated daily
       with the program /etc/cron.daily/cracklib.  The location is also defined in the header file crack.h  using  the
       constant  CRACKLIB_DICTPATH  though  none of the subroutines in the cracklib libraries have this location hard-
       coded into their implementations.


FILES
       /var/cache/cracklib/cracklib_dict.[hwm|pwd|pwi]
              cracklib dictionary database files used by utilities.

       /etc/cron.daily/cracklib
              cracklib daily cron program to rebuild the cracklib dictionary database.

       /etc/cracklib/cracklib.conf
              cracklib configuration file used by the cracklib daily cron program to rebuild the  cracklib  dictionary
              database.

       /usr/include/crack.h
              cracklib  header file defining the subroutine FascistCheck(3) and the constant CRACKLIB_DICTPATH used to
              compile in the location of the cracklib dictionary database for these utilities.

       /usr/sbin/cracklib-format
              cracklib shell script to create initial list of words for dictionary database.

SEE ALSO
       FascistCheck(3), cracklib-check(8), update-cracklib(8), create-cracklib-dict(8)
       /usr/share/doc/libcrack2/libcrack2.html
       /usr/share/doc/cracklib-runtime/cracklib-runtime.html

AUTHOR
       cracklib2 is written by Alec Muffett <alecmATcrypto.uk>. Manual added by  Jean  Pierre  LeJacq  <jple-
       jacqATquoininc.com>.



2.7-8.5                  Sat Jun 21 22:43:12 CEST 2008      cracklib-format(8)