Manual: cracklib-packer

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 CRACK‐
       LIB_DICTPATH though none of the subroutines in the cracklib libraries have this location hardcoded into their  imple‐
       mentations.

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 data‐
	      base.

       /usr/include/crack.h
	      cracklib header file defining the subroutine FascistCheck(3) and the constant CRACKLIB_DICTPATH used  to	com‐
	      pile 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)