uniq(1)          (Directory and File Management Utilities)          uniq(1)


   NAME
         uniq - report repeated lines in a file

   SYNOPSIS
         uniq [ -udc [ +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 is used, just the
         lines that are not repeated in the original file are output.  The -d
         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 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.

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



















   8/91                                                                 Page 1