I want to watch the output of my program, but it is not easy: process called from tty fastly take over all the screen. It is difficult to return to the original terminal before the wless(window manager) process stops.

So time to use tools to forward log. On Alpine Linux nc comes with busybox, but it doesn’t have the feature we need, just install the openbsd version:

$ apk add netcat-openbsd

First start server to receive messages from the listening port. Option k means persist host, otherwise it would quit in spare time:

$ nc -lk -p 12345

Then we can use pipe to rediect output and send messages:

./wless 2>&1 | nc localhost 12345

Works well!