unsq


SYNOPSIS
       sq < infile > outfile

       unsq < infile > outfile

DESCRIPTION
       sq compresses a sorted list of words (a dictionary).  For example:
              sort -u /usr/share/dict/words | sq | gzip -9 > words.sq.gz
       will compress dict by about a factor of 5.

       unsq uncompress the output of sq.  For example:
              gunzip < words.sq.gz | unsq | sort -f -o words
       will uncompress a dictionary compressed with sq.

       The squeezing is achieved by eliminating common prefixes, and replacing
       them with a single character which encodes  the  number  of  characters
       shared with the preceding word.  The prefix size is encoded as a single
       printable character: 0-9 represent 0-9, A-Z represent  10-35,  and  a-z
       represent 36-61.

BUGS
       sq  and  unsq can only handle words of up to 256 characters.  The input
       must be sorted, and duplicates must be suppressed.

AUTHOR
       Mike Wexler

SEE ALSO
       compress(1), sort(1).



                                     LOCAL                               SQ(1)
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