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  identi-
     cal.  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).