Manual: cracklib-unpacker

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 lower‐
       cases 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 Fas‐
       cistCheck(3) subroutine, cracklib-unpacker(8), and cracklib-check(8), utilities understand.  The num‐
       ber 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 argu‐
       ment cracklib_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  crack‐
       lib-packer(8).	On  a  Debian  system  the  database  is  located in the directory /var/cache/crack‐
       lib/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 sub‐
       routines in the cracklib libraries have this location hardcoded 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_DICT‐
	      PATH 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 . Manual added by Jean Pierre  LeJacq
       .

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