1UNIQ(1)                          User Commands                         UNIQ(1)
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NAME

6       uniq - report or omit repeated lines
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SYNOPSIS

9       uniq [OPTION]... [INPUT [OUTPUT]]
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DESCRIPTION

12       Filter  adjacent matching lines from INPUT (or standard input), writing
13       to OUTPUT (or standard output).
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15       With no options, matching lines are merged to the first occurrence.
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17       Mandatory arguments to long options are  mandatory  for  short  options
18       too.
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20       -c, --count
21              prefix lines by the number of occurrences
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23       -d, --repeated
24              only print duplicate lines
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26       -D, --all-repeated[=delimit-method]
27              print              all              duplicate              lines
28              delimit-method={none(default),prepend,separate}  Delimiting   is
29              done with blank lines.
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31       -f, --skip-fields=N
32              avoid comparing the first N fields
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34       -i, --ignore-case
35              ignore differences in case when comparing
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37       -s, --skip-chars=N
38              avoid comparing the first N characters
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40       -u, --unique
41              only print unique lines
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43       -z, --zero-terminated
44              end lines with 0 byte, not newline
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46       -w, --check-chars=N
47              compare no more than N characters in lines
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49       --help display this help and exit
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51       --version
52              output version information and exit
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54       A field is a run of blanks (usually spaces and/or TABs), then non-blank
55       characters.  Fields are skipped before chars.
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57       Note: 'uniq' does not detect repeated lines unless they  are  adjacent.
58       You  may want to sort the input first, or use `sort -u' without `uniq'.
59       Also, comparisons honor the rules specified by `LC_COLLATE'.
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AUTHOR

62       Written by Richard M. Stallman and David MacKenzie.
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REPORTING BUGS

65       Report uniq bugs to bug-coreutils@gnu.org
66       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
67       General help using GNU software: <http://www.gnu.org/gethelp/>
68       Report uniq translation bugs to <http://translationproject.org/team/>
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71       Copyright © 2010 Free Software Foundation, Inc.   License  GPLv3+:  GNU
72       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
73       This  is  free  software:  you  are free to change and redistribute it.
74       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

77       comm(1), join(1)
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79       The full documentation for uniq is maintained as a Texinfo manual.   If
80       the  info  and  uniq  programs are properly installed at your site, the
81       command
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83              info coreutils 'uniq invocation'
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85       should give you access to the complete manual.
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89GNU coreutils 8.4                  June 2018                           UNIQ(1)
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