Literally just say T-shirt. Nobody calls this a tee. Except if you are in a clothing store I guess

Especially as the picture literally has a command prompt saying "$ tee <command>"

Yep, hearing this loud and clear. Updating the copy to say t-shirt.

+1, I was a bit confused as I was wondering about tee command too.

OP, Just say T-shirt please ,instead of terminal to tee, say terminal to t-shirt in 6 seconds!