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 stan-
       dard 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, one for each group

       -D, --all-repeated[=METHOD]
              print  all  duplicate  lines  groups  can  be  delimited   with   an   empty   line
              METHOD={none(default),prepend,separate}

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

       --group[=METHOD]
              show   all   items,   separating   groups   with   an   empty   line  METHOD={sepa-
              rate(default),prepend,append,both}

       -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'.

       GNU  coreutils  online help: <http://www.gnu.org/software/coreutils/> Report uniq transla-
       tion bugs to <http://translationproject.org/team/>

AUTHOR
       Written by Richard M. Stallman and David MacKenzie.

COPYRIGHT
       Copyright (C) 2013 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), sort(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 8.22                        November 2016                                   UNIQ(1)

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