In this gist I'll upload the solutions to the 21 curl exercises proposed by Julia Evans on this blogpost. While curl definitely isn't a life-changing skill, it's a tool that can be really useful once you master it, and considering the low investment that is required it's definitely a good time investment
All the solutions contain the command that needs to be run to solve the exercise; apart from that, some of them will include also the response that we've obtained, or a small explanation about the different arguments of the command that we've used. That will make it easier for people reading this to get a better understanding of the solution.
Request https://httpbin.org
Command: curl https://httpbin.org