1. User Submitted Solutions

    Sat 04 March 2017 By jarv

    Adding to the interesting 191 ways to echo hello world I've now added the ability to see user-submitted solutions to cmdchallenge.

    There are some gems if you dig through them including maybe the longest regex I've ever seen for pulling an IP address out of a file:

    (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)
    

    Also scrolling down the page of solutions to the corrupted text problem is glorious.

    The solutions are not updated ...


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  2. figlet breakout

    Fri 24 February 2017 By jarv

    I was looking for a cool ending for cmdchallenge and decided to dust off a 2 year old javascript project which created a breakout game from figlet fonts. Not quite a full re-write but fixed a lot of bugs and did away completely with coffee-script. More info on the github page.

    Or you can click here to play.


  3. 191 ways to echo hello world on the command line

    Wed 08 February 2017 By jarv

    It's been about 12 days since the launch of cmdchallenge, a weekend project to create some common command-line tasks that can be done in a single line of bash. One common request has been to share user-submitted solutions. Or to put it another way, you may be wondering what do random people on the internet and hackernews type if you give them some basic command-line tasks and a shell prompt? Well lucky for me this is no longer a mystery!

    Starting off with Challenge #1:

    CMD Challenge #1: print "hello world" at the bash prompt

    There has been a ...


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  4. Reddit front-page visualization

    Wed 21 January 2015 By jarv

    Using data from page-watch.com this shows a time-lapse of reddit overnight on January 20th taken at 5minute intervals. This excludes images which is why there are occasional jumps where advertisements are.


  5. page watch

    Tue 20 January 2015 By jarv

    This is probably my last side project before I relocate and start my new job, presenting page-watch. I created it to scratch a personal itch that I had which was I was finding it difficult to track changes on websites that were relatively static with infrequent updates. There are other page monitoring web tools out there, what makes this one different is that it is a) dead simple b) has an rss option.

    If you find it useful I would love to hear what you think, I will hopefully write a follow-up post with more technical details when my life ...


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