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STRFILE(8)		  BSD System Manager's Manual		    STRFILE(8)

     strfile, unstr -- create a	random access file for storing strings

     strfile [-Ciorsx] [-c char] source_file [output_file]
     unstr source_file

     The strfile utility reads a file containing groups	of lines separated by
     a line containing a single	percent	`%' sign and creates a data file which
     contains a	header structure and a table of	file offsets for each group of
     lines.  This allows random	access of the strings.

     The output	file, if not specified on the command line, is named

     The options are as	follows:

     -C	      Flag the file as containing comments.  This option cases the
	      STR_COMMENTS bit in the header str_flags field to	be set.	 Com-
	      ments are	designated by two delimiter characters at the begin-
	      ning of the line,	though strfile does not	give any special
	      treatment	to comment lines.

     -c	char  Change the delimiting character from the percent sign to char.

     -i	      Ignore case when ordering	the strings.

     -o	      Order the	strings	in alphabetical	order.	The offset table will
	      be sorted	in the alphabetical order of the groups	of lines ref-
	      erenced.	Any initial non-alphanumeric characters	are ignored.
	      This option causes the STR_ORDERED bit in	the header str_flags
	      field to be set.

     -r	      Randomize	access to the strings.	Entries	in the offset table
	      will be randomly ordered.	 This option causes the	STR_RANDOM bit
	      in the header str_flags field to be set.

     -s	      Run silently; do not give	a summary message when finished.

     -x	      Note that	each alphabetic	character in the groups	of lines is
	      rotated 13 positions in a	simple caesar cypher.  This option
	      causes the STR_ROTATED bit in the	header str_flags field to be

     The format	of the header is:

     #define VERSION 1
     uint32_t	     str_version;    /*	version	number */
     uint32_t	     str_numstr;     /*	# of strings in	the file */
     uint32_t	     str_longlen;    /*	length of longest string */
     uint32_t	     str_shortlen;   /*	length of shortest string */
     #define STR_RANDOM	     0x1     /*	randomized pointers */
     #define STR_ORDERED     0x2     /*	ordered	pointers */
     #define STR_ROTATED     0x4     /*	rot-13'd text */
     #define STR_COMMENTS    0x8     /*	embedded comments */
     uint32_t	     str_flags;	     /*	bit field for flags */
     char	     str_delim;	     /*	delimiting character */

     All fields	are written in network byte order.

     The purpose of unstr is to	undo the work of strfile.  It prints out the
     strings contained in the file source_file in the order that they are
     listed in the header file source_file.dat to standard output.  It is pos-
     sible to create sorted versions of	input files by using -o	when strfile
     is	run and	then using unstr to dump them out in the table order.

     strfile.dat  default output file.

     byteorder(3), fortune(6)

     The strfile utility first appeared	in 4.4BSD.

BSD			       February	17, 2005			   BSD


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