TEE(1) User Commands TEE(1) NAME tee - read from standard input and write to standard output and files SYNOPSIS tee [OPTION]... [FILE]... DESCRIPTION Copy standard input to each FILE, and also to standard output. -a, --append append to the given FILEs, do not overwrite -i, --ignore-interrupts ignore interrupt signals -p operate in a more appropriate MODE with pipes --output-error[=MODE] set behavior on write error. See MODE below --help display this help and exit --version output version information and exit MODE determines behavior with write errors on the outputs: warn diagnose errors writing to any output warn-nopipe diagnose errors writing to any output not a pipe exit exit on error writing to any output exit-nopipe exit on error writing to any output not a pipe The default MODE for the -p option is 'warn-nopipe'. With "nopipe" MODEs, exit immediately if all outputs become broken pipes. The default operation when --output-error is not specified, is to exit immediately on error writ- ing to a pipe, and diagnose errors writing to non pipe outputs. AUTHOR Written by Mike Parker, Richard M. Stallman, and David MacKenzie. REPORTING BUGS Report bugs to: bug-coreutils@gnu.org GNU coreutils home page: <https://www.gnu.org/software/coreutils/> General help using GNU software: <https://www.gnu.org/gethelp/> Report any translation bugs to <https://translationproject.org/team/> COPYRIGHT Copyright (C) 2025 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO Full documentation <https://www.gnu.org/software/coreutils/tee> or available locally via: info '(coreutils) tee invocation' GNU coreutils 9.9 November 2025 TEE(1)
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