UNIQ(1) UNIQ(1) uniq -- uniq []... [ []] ( ) ( ). , . , , . -c, --count -d, --repeated , -D --all-repeated[=] , -D, ; ={none (, ), prepend (), separate ()} -f, --skip-fields=N N --group[=] , ; ={separate (, ), prepend (), append (), both ( )} -i, --ignore-case -s, --skip-chars=N N -u, --unique -z, --zero-terminated NUL -w, --check-chars=N N --help --version ( , / ) . . <> , . <> <>. . (Richard M. Stallman) (David MacKenzie). - GNU coreutils: Copyright (C) 2024 Free Software Foundation, Inc. GPLv3+: GNU GPL 3 . : . , . comm(1), join(1), sort(1) , info '(coreutils) uniq invocation' () ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () <>. GNU coreutils 9.5 2024 . UNIQ(1)