tee

duplicating pipe content

TLDR

Copy standard input to each FILE, and also to standard output

$ echo "example" | tee [FILE]
copy

Append to the given FILEs, do not overwrite

$ echo "example" | tee -a [FILE]
copy

Print standard input to the terminal, and also pipe it into another program for further processing

$ echo "example" | tee [/dev/tty] | [xargs printf "[%s]"]
copy

Create a directory called "example", count the number of characters in "example" and write "example" to the terminal

$ echo "example" | tee >(xargs mkdir) >(wc -c)
copy

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

diagnose errors writing to non 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'. 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.

REPORTING BUGS

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT

Copyright © 2020 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'

AUTHOR

Written by Mike Parker, Richard M. Stallman, and David MacKenzie.

Copied to clipboard
Stream 500+ movies for free and without signup