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 DW(1L)                                                               DW(1L)
                                08 April 1991

      dw - find duplicate words

      dw < infile >outfile

      dw filters its standard input, printing on standard output only those
      words which appear twice in succession.  Each word is prefixed by its
      line number(s).

      A word starts with a letter or underscore, and is followed by zero or
      more letters, underscores, or digits.  Letter case is ignored.

      This is a handy tool for finding a common typographical error in

      Its other purpose is to demonstrate a reasonably short lex(1) program.

      awk(1), lex(1).

      Nelson H. F. Beebe, Ph.D.
      Center for Scientific Computing
      Department of Mathematics
      South Physics Building
      University of Utah
      Salt Lake City, UT 84112
      Tel: (801) 581-5254
      FAX: (801) 581-4148
      Email: <>

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