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UNIQ(1) User Commands UNIQ(1) NAME uniq - report or omit repeated lines 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 (C) 2007 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law. 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 uniq should give you access to the complete manual. GNU coreutils 6.9 October 2008 UNIQ(1)