TEE(1)

NAME
tee - duplicate standard input

SYNOPSIS
tee [-ai] [file ...]

DESCRIPTION
The tee utility copies standard input to standard output, making a copy in zero or more files. The output is unbuffered.

The following options are available:

-a  Append the output to the files rather than overwriting them.

-i  Ignore the SIGINT signal.

The following operands are available:

file
    A pathname of an output file.

The tee utility takes the default action for all signals, except in the event of the -i option.

This implementation of the tee utility may also write to unix(4) sockets.

EXIT STATUS

EXAMPLES
Send the echoed message both to stdout and to the greetings.txt file:

    $ echo "Hello" | tee greetings.txt
    Hello

STANDARDS
The tee utility is expected to be p1003.2 compatible.

HISTORY
The tee command first appeared in AT&T UNIX.