Hi, I'm new here. I've build a small tool, similar to tee, but in reverse - wye.
https://github.com/bacv/wye

In my workflow I use cargo build and cargo test a lot, usually those jobs are running in different tmux panes, I wanted a more convenient way to control this process from my editor.

Although I could have done it with tmux and scripts, I felt that making a small tool for it would be fun experiment.