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SuSE 11.3 - man page for unsq (suse section 1)

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SQ(1)											    SQ(1)

NAME
       sq, unsq - squeeze or unsqueeze a sorted word list

SYNOPSIS
       sq < infile > outfile

       unsq < infile > outfile

DESCRIPTION
       sq compresses a sorted list of words (a dictionary).  For example:
	      sort -u /usr/dict/words | sq | gzip -9 > words.sq.Z
       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 pre-
       fix  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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