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 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
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 © 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.
SEE ALSO
Full documentation <https://www.gnu.org/software/coreutils/tee>
or available locally via: info '(coreutils) tee invocation'
GNU coreutils 9.10 March 2026 tee(1)
coreutils 9.10 - Generated Thu Apr 2 18:31:55 CDT 2026