It loosely follows the same metaphor as the T-shaped pipe connector that 'tee' is named for. $ seq 3 | tee somefile 1 2 3 ╔═somefi

It loosely follows the same metaphor as the T-shaped pipe connector that 'tee' is named for. $ seq 3 | tee somefile 1 2 3 ╔═somefile seq═tee═╣ ╚═stdout $ seq 10 | pee 'head -n 3' 'tail -n 3' 1 2 3 8 9 10 ╔═head═╗ seq═pee═╣ ╠═stdout ╚═tail═╝