TEE(1) TEE(1) tee -- tee []... []... , . -a, --append , -i, --ignore-interrupts -p operate in a more appropriate MODE with pipes --output-error[=MODE] . . --help --version : warn warn-nopipe , (pipe) exit exit-nopipe , (pipe) -p -- <>. <> , . --output-error , (pipe) , . (Mike Parker), . (Richard M. Stallman) (David MacKenzie). bug-coreutils@gnu.org GNU coreutils: GNU: Copyright (C) 2026 Free Software Foundation, Inc. GPLv3+: GNU GPL 3 . : . , . , info '(coreutils) tee invocation' () ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () . GNU coreutils 9.11 2026 . TEE(1)