tee — Read from `stdin` and write to `stdout` and files (or commands). More information: <https://www.gnu.

Copy `stdin` to each file, and also to `stdout`

echo "example" | tee {{path/to/file}}

Append to the given files, do not overwrite

echo "example" | tee {{[-a|--append]}} {{path/to/file}}

Print `stdin` to the terminal, and also pipe it into another program for further processing

echo "example" | tee {{/dev/tty}} | {{xargs printf "[%s]"}}

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|--bytes]}})