uniq(1) - phpMan

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UNIQ(1)                          User Commands                         UNIQ(1)



NAME
       uniq - report or omit repeated lines

SYNOPSIS
       uniq [OPTION]... [INPUT [OUTPUT]]

DESCRIPTION
       Filter  adjacent  matching  lines from INPUT (or standard input), writing to OUTPUT
       (or standard output).

       With no options, matching lines are merged to the first occurrence.

       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

       -z, --zero-terminated
              end lines with 0 byte, not newline

       -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 blanks (usually spaces and/or TABs), then non-blank characters.
       Fields are skipped before chars.

       Note: 'uniq' does not detect repeated lines unless they are adjacent.  You may want
       to  sort the input first, or use 'sort -u' without 'uniq'.  Also, comparisons honor
       the rules specified by 'LC_COLLATE'.

AUTHOR
       Written by Richard M. Stallman and David MacKenzie.

REPORTING BUGS
       Report uniq bugs to bug-coreutils AT gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report uniq translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version  3
       or later <http://gnu.org/licenses/gpl.html>.
       This  is  free  software:  you are free to change and redistribute it.  There is NO
       WARRANTY, to the extent permitted by law.

SEE ALSO
       comm(1), join(1)

       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 invocation'

       should give you access to the complete manual.



GNU coreutils 8.4                 March 2017                           UNIQ(1)

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