All rights reserved.
This code is derived from software contributed to Berkeley by
Ken Arnold.
%sccs.include.redist.man%
@(#)strfile.8 5.8 (Berkeley) 06/24/90
unstr source_file
The output file, if not specified on the command line, is named source_file.out.
The options are as follows:
-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 referenced. 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; don't 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 set.
The format of the header is:
#define VERSION 1 unsigned long str_version; /* version number */ unsigned long str_numstr; /* # of strings in the file */ unsigned long str_longlen; /* length of longest string */ unsigned long 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 */ unsigned long 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 possible 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.