# uniq(1)

    NAME
         uniq - delete consecutive identical lines in a file

    SYNOPSIS
         uniq [-cdu] [-n] [+n] [input [output]]

    OPTIONS

         -c   Give count of identical lines in the input

         -d   Only duplicate lines are written to output

         -u   Only unique lines are written to output

         -n   Skip the first n columns when matching

         +n   Skip the first n fields when matching

    EXAMPLES

         uniq +2 file        # Ignore first 2 fields when comparing

         uniq -d inf outf    # Write duplicate lines to outf

    DESCRIPTION

         Uniq examines a file for consecutive lines that are identical.   All  but
         duplicate entries are deleted, and the file is written to output.  The +n
         option skips the first n fields, where a field is defined  as  a  run  of
         characters  separated  by  white  space.  The -n option skips the first n
         spaces.  Fields are skipped first.

    SEE ALSO
         sort(1).