I put something together very similar to this, https://cmdchallenge.com https://cmdchallenge.com that I like a bit better because it has console input. There i

I put something together very similar to this, https://cmdchallenge.com https://cmdchallenge.com that I like a bit better because it has console input. There is also a Christmas edition "12 days of shell" https://12days.cmdchallenge.com https://12days.cmdchallenge.com that is more like a learning progression.