uniq(1)                                                   uniq(1)



     NAME
          uniq - report repeated lines in a file

     SYNOPSIS
          uniq [-u] [-d] [-c] [+n] [-n] [input[output]]

     DESCRIPTION
          uniq reads the input file comparing adjacent lines.  In the
          normal case, the second and succeeding copies of repeated
          lines are removed; the remainder is written on the output
          file.  input and output should always be different.  Note
          that repeated lines must be adjacent in order to be found;
          see sort(1).  If the -u flag option is used, just the lines
          that are not repeated in the original file are output.  The
          -d flag option specifies that one copy of just the repeated
          lines is to be written.  The normal mode output is the union
          of the -u and -d mode outputs.

          The -c flag option supersedes -u and -d and generates an
          output report in default style but with each line preceded
          by a count of the number of times it occurred.

          The n arguments specify skipping an initial portion of each
          line in the comparison:

          -n   The first n fields together with any blanks before each
               are ignored.  A field is defined as a string of non-
               space, non-tab characters separated by tabs and spaces
               from its neighbors.

          +n   The first n characters are ignored.  Fields are skipped
               before characters.

     EXAMPLE
               uniq file1

          prints contents of file1 with adjacent identical lines
          removed.

     FILES
          /usr/bin/uniq

     SEE ALSO
          comm(1), sort(1).











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