UNIQ(1)    User Commands         UNIQ(1)

NAME
       uniq - remove duplicate lines from a sorted file
SYNOPSIS
       uniq [OPTION]... [INPUT [OUTPUT]]

DESCRIPTION
       Discard all but one of successive identical lines from INPUT (or stan-
       dard input), writing to OUTPUT (or standard output).

       Mandatory arguments to long options are mandatory  for  short  options
       too.

       -c, --count
       prefix lines by the number of occurrences

       -d, --repeated
       only print duplicate lines

       -D, --all-repeated[=delimit-method] print all duplicate lines
       delimit-method={none(default),prepend,separate}  Delimiting  is
       done with blank lines.

       -f, --skip-fields=N
       avoid comparing the first N fields

       -i, --ignore-case
       ignore differences in case when comparing

       -s, --skip-chars=N
       avoid comparing the first N characters

       -u, --unique
       only print unique lines

       -w, --check-chars=N
       compare no more than N characters in lines

       --help display this help and exit

       --version
       output version information and exit

       A field is  a  run  of  whitespace,  then  non-whitespace  characters.
       Fields are skipped before chars.

AUTHOR
       Written by Richard Stallman and David MacKenzie.

REPORTING BUGS
       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT
       Copyright © 2004 Free Software Foundation, Inc.
       This  is  free software; see the source for copying conditions. There
       is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO
       The full documentation for uniq is maintained as a Texinfo manual.  If
       the info and uniq programs are properly installed at  your  site,  the
       command

       info coreutils uniq

       should give you access to the complete manual.