To get crazy fast in the command line, try Command Line Challenge, practicelinux.com, learnshell.org and commandlinefu.com. Source: 8 months ago

I put something together very similar to this, 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 that is more like a learning progression. - Source: Hacker News / 9 months ago

Nice to see this posted on HN! A while back ago I used them for the design of a site a built https://cmdchallenge.com/ which gives it a nice feel of achievement badges without using standard unicode characters that may look different depending on the client. - Source: Hacker News / 10 months ago

Cmd challenge is a website that gives you a linux terminal, and asks you to perform different tasks on it, so you sharpen your linux terminal skills. - Source: dev.to / over 1 year ago

Aye that's a good one. CmdChallenge is also quite nice. Source: almost 2 years ago

There is also https://blogtrottr.com/ which has a free plan with ads. It seems to update hourly on the free plan. (I used this service for years before creating my own, I can highly recommend it). Source: about 1 year ago

There are other services available as well. The keyword you are looking for is rss-to-email. I used to use https://blogtrottr.com/ for years before making my own and they have an ad-supported free tier if you prefer that. Source: over 1 year ago

I use RSS-to-Email then read them in my mail clients. Most things get routed to a few folders without notifications that I open when I want news. I'm using my own RSS-to-Email service https://feedmail.org but I've also used https://blogtrottr.com/ in the past. - Source: Hacker News / over 1 year ago

And you can get realtime RSS→email at https://blogtrottr.com/ for free (ads in emails). Or use some other RSS app. Source: over 1 year ago

I use my own RSS-to-Email service https://feedmail.org/. I've written about my setup and why I prefer RSS-to-Email on my blog nearly a decade ago https://kevincox.ca/2013/06/27/email-as-rss-reader/. I used to use https://blogtrottr.com which I do still think is a good product, they just didn't quite fit my needs so after about 8 years I ended up creating my own. - Source: Hacker News / over 1 year ago