base27.txt

来自「基于图象的信息隐藏的C源码」· 文本 代码 · 共 67 行

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BASE27(1)                                               BASE27(1)NAME       base27 - converts text into a different baseSYNOPSIS       base27 [ -d ] [ -C codestr ] infile > outfileDESCRIPTION       base27  is  intended  to compress small amounts of textual       data (under 100 characters) by converting it to a  differ-       ent  base  --  by  default this is base 27, meaning it can       encode all uppercase alphabetic characters and whitespace.       All  lowercase  characters  are uppercased, and characters       that cannot be converted are stripped.       You can encode/decode  different  sets  of  characters  by       passing  an  argument  to  the  -C parameter; for instance       passing -C '01' will encode/decode binary strings.OPTIONS       -d          Decode text previously encoded using this pro-                   gram.       -C          Set  the  code  string to be used.  The number                   base is set to the  number  of  characters  in                   this   string.  The  default  is  "@ABCDEFGHI-                   JKLMNOPQRSTUVWXYZ".       -u          Do not convert  to  uppercase  when  encoding.                   This  would  be  used  if lowercase characters                   were present in the code string.SEE ALSO       stegparty(1)AUTHOR            Steven Hugg            hugg@pobox.com            http://pobox.com/~hugg/0.2                        04 Nov 1999                          1

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