tee - read from standard input and write to standard output and files tee [-ai] [--append] [--ignore-interrupts] [--help] [--version] [file...] This manual page documents the GNU version of tee . The tee command copies the standard input to the standard output and any files given as arguments.

If a file being written to does not already exist, it is created. If a file being written to already exists, the data it previously contained is overwritten unless the -a option is used.

"-a, --append" Append the standard input to the given files rather than overwriting them.

"--help" Print a usage message on standard output and exit successfully.

"-i, --ignore-interrupts" Ignore interrupt signals.

"--version" Print version information on standard output then exit successfully.