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Rev Author # Line
1 perry 1 SQ
2 !!!SQ
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 AUTHOR
7 SEE ALSO
8 ----
9 !!NAME
10
11
12 sq - squeeze a sorted word list unsq - unsqueeze a sorted word list
13 !!SYNOPSIS
14
15
16 __sq__ __
17
18
19 __unsq__ __
20 !!DESCRIPTION
21
22
23 ''sq'' compresses a sorted list of words (a dictionary).
24 For example:
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27 sort /usr/share/dict/words | sq | compress
28
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30 will compress dict by about a factor of 4.
31
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33 ''unsq'' uncompress the output of ''sq.'' For
34 example:
35
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37 compress -d
38
39
40 will uncompress a dictionary compressed with
41 ''sq.''
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44 The squeezing is achieved by eliminating common prefixes,
45 and replacing them with a single character which encodes the
46 number of characters shared with the preceding word. The
47 prefix size is encoded as a single printable character: 0-9
48 represent 0-9, A-Z represent 10-35, and a-z represent
49 36-61.
50 !!AUTHOR
51
52
53 Mike Wexler
54 !!SEE ALSO
55
56
57 compress(1), sort(1).
58 ----
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