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 .

COPYRIGHT
       Copyright (C) 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.



uniq (coreutils) 5.2.1		 August 2006			      UNIQ(1)

UNIX/Linux commands referenced on this page:

1. compare
2. more
3. display
4. free
5. as
6. info
7. at