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TEE

Section: User Commands (1)
Updated: February 2026
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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.

X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#te-a'-a, --appendX'tty: link'

append to the given FILEs, do not overwrite

X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#te-i'-i, --ignore-interruptsX'tty: link'

ignore interrupt signals

X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#te-p'-pX'tty: link'

operate in a more appropriate MODE with pipes

X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#te-outpu-error'--output-error[=MODE]X'tty: link'

set behavior on write error. See MODE below

X'tty: link https://www.gnu.org/software/coreutils/tee#te-help'--helpX'tty: link'

display this help and exit

X'tty: link https://www.gnu.org/software/coreutils/tee#te-version'--versionX'tty: link'

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 writing 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

Report Gentoo bugs to: https://bugs.gentoo.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/>  

SEE ALSO

Full documentation <https://www.gnu.org/software/coreutils/tee>
or available locally via: info aq(coreutils) tee invocationaq

Packaged by Gentoo (9.10 (p0))
Copyright © 2026 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.

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Index

NAME

SYNOPSIS

DESCRIPTION

MODE determines behavior with write errors on the outputs:

AUTHOR

REPORTING BUGS

SEE ALSO