uniq



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  PARTICULAR
       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             July 2005                           UNIQ(1)

Man(1) output converted with man2html