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uniq - remove duplicate lines from a sorted file
uniq [OPTION]...
[INPUT [OUTPUT]]
Discard all but one of successive identical
lines from INPUT (or standard input), writing to OUTPUT (or standard output).
- -c, --count
- prefix lines by the number of occurrences
- -d, --repeated
- only print
duplicate lines
- -D, --all-repeated
- print all duplicate 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
- -N
- same as -f N
- +N
- same as -s N
- --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.
Report bugs to <bug-textutils@gnu.org>.
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.
Copyright © 1999 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.
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