Some time ago I asked you if you would be interested in a book about Erlang performance. [1]
There were many people interested, but the publishers I talked to were not interested. So I wrote a book about designing Command Line Interfaces and writing Command Line Clients instead and published it on my own (http://theclibook.com)
As I still have material from the draft I sent out to the publishers I decided to publish the content on my blog. I hope you enjoy!
Robert :)
[1] https://news.ycombinator.com/item?id=10047444
