LOOK(1)                                                   LOOK(1)

     NAME
          look - find lines in a sorted list

     SYNOPSIS
          look [ -df ] string [ file ]

     DESCRIPTION
          Look consults a sorted file and prints all lines that begin
          with string. It uses binary search.

          The options d and f affect comparisons as in sort(1):

          d   `Dictionary' order: only letters, digits, tabs and
              blanks participate in comparisons.

          f   Fold.  Upper case letters compare equal to lower case.

          If no file is specified, /usr/dict/words is assumed with
          collating sequence -df.

     FILES
          /usr/dict/words

     SEE ALSO
          sort(1), grep(1)