curl cheat.sh — get an instant answer to any question on (almost) any programming language from the command line

tldr

do curl cht.sh/go/execute+external+program to see how to execute external program in go

And this question: why I actually should I start the browser, and the browser has to downloads tons of JS, CSS and HTML, render them thereafter, only to show me some small output,
some small text, number or even some plot. Why can't I do a trivial query from the command line
and instantly get what I want?

I decided to create some service that will work as I think such a service should work.
And that is how wttr.in was created.

Nowadays you probably know, how to check the weather from the command line, but if not:

curl wttr.in

or

curl wttr.in/Paris

(curl wetter in Paris if you want to know the weather in Paris)

After that several other services were created (the point was to check how good the console
can solve the task, so I tried to create services providing information
of various nature: text, numbers, plots, pseudo graphic etc.):

curl rate.sx/btc # to check exchange rate of any (crypto)currency
curl qrenco.de/google.com # to QRenco.de any text

And now last but not least, the gem in this collection: cheat.sh.

The original idea behind the service was just to deliver a various UNIX/Linux command line cheat sheets via curl. There are several beautiful community driven cheat sheet repositories such as tldr, but the problem is that to use them you have to install them first, and it is quite often that you have no time for it, you just want to quickly check some cheat sheet.

With cheat.sh you don't need to install anything, just do:

curl cheat.sh/tar (or whatever)

you will get a cheat sheet for this command (if such cheat sheet exists inf one of the most popular community-driven cheat sheet repositories; but it surely does).

But then I thought: why actually show only existing cheat sheets? Why not generate cheat sheets or better to say on the fly? And that is how the next major update of cheat.sh was created.

Now you can simply do:

curl cht.sh/python/copy+files
curl cht.sh/go/execute+external+program
curl cht.sh/js/async+file+read

or even

curl cht.sh/python/копировать+файл
curl cht.sh/ruby/Datei+löschen
curl cht.sh/lua/复制文件

and get your question answered
(cht.sh is an alias for cheat.sh).

And it does not matter what language have you used to ask the question. To be short, all pairs (human language => programming language) are supported.

One very important major advantage of console oriented interfaces is that they are easily
programmable and can be easily integrated with various systems.
For example, Vim and Emacs plugins were created by means of that you can
query the service directly from the editor so that you can just write your
questions in the buffer and convert them in code with a keystroke.

The service is of course far from the perfection,
there are plenty of things to be fixed and to be implemented,
but now you can see its contours and see the contours of this approach,
console oriented services.

The service (as well as the other mentioned above services) is opensource, its code is available here:
https://github.com/chubin/cheat.sh

What do you think about this service?
What do you think about this approach?
Have you already heard about these services before?
Have you used them?
If yes, what do you like about them and what are you missing?

You know what really pisses me off about the dev community is the circle jerk that ensues when someone bashes something they have no experience in. Take yesterday's React bash on Reddit and DevRant. Thomas Fuchs compared React and JSX to the intermingling of HTML CSS and JS of 15 years ago. If you knew anything about React or spent 1 hour learning what it's about you would immediately know why that isn't true but no, a giant circle jerk ensued comparing it to PHP! I'm sorry but HOW can you compare a pure JS view library that is renderable by the browser, to a full fledged server side language?? Not to mention the React approach uses a completely different programming paradigm of functional programming.

When I first saw React and Redux I realized what this is all really about, a shift in the paradigms of programming. React + Redux is the first time that functional programming has entered mainstream. We've had functional programming available to us via Haskell and more recently Clojure for a while now but it was never very obvious how powerful functional programming could be outside of the niche that used it for more analytical type tools. Now we have things like hot reloading (https://youtube.com/watch/...) and state playback (https://youtube.com/watch/... skip to ~3min to watch the magic) thanks to immutable state.

Before you decide that React is just another flavor of the month library I encourage you to learn about the advantages that functional programming provides (https://medium.com/@cscalfani/...) and checkout Elm (http://elm-lang.org/) as well. The nice thing about React + Redux is that it gives us a way to start programming functionally, without having to learn ML style syntax like Elm and ClojureScript. Keep in mind, when Object Oriented Programming was becoming popular it was widely controversial as well and look at all it has done for us.

just found out a vulnerability in the website of the 3rd best high school in my country.

TL;DR: they had burried in some folders a c99 shell.

i am a begginer html/sql/php guy and really was looking into learning a bit here and there about them because i really like problem solving and found out ctfs mainly focus on this part of programming. i am a c++ programmer which does school contest like programming problems and i really enjoy them.

now back on topic.

with this urge to learn more web programming i said to myself what other method to learn better than real life sites! so i did just that. i first checked my school site. right click. inspect element. it seemed the site was made with wordpress. after looking more into the html code for the site i concluded all the images and files i could see on the site were from a folder on the server named 'wp-content/uploads'. i checked the folder. and here it got interesting. i did a get request on the site. saw the details. then i checked the site. bingo! there are 3 folders named '2017', '2018', '2019'. i said to myself: 'i am god.'
i could literally see all the announcements they have made from 2017-2019. and they were organised by month!!! my curiosity to see everything got me to the final destination.

with this adrenaline i thought about another site. in my city i have the 3rd most acclaimed high school in the country. what about checking their security?

so i typed the web address. looked around. again, right click, inspect element and looked around the source code. this time i was more lucky. this site is handmade!!! i was soooo happy because with my school's site i was restricted with what they have made with wordpress and i don't have much experience with it.

amd so i began looking what request the site made for the logos and other links. it seemed all the other links on the site were with this format: www.site.com/index.php?home. and i was very confused and still am. is this referencing some part of the site in the index.php file? is the whole site written inside the index.php file and with the question mark you just get to a part of the site? i don't really get it.

so nothing interesting inside the networking tab, just some stylesheets for the site's design i guess. i switched to the debugger tab and holy moly!! yes, it had that tree structure. very familiar. just like a project inside codeblocks or something familiar with it. and then it clicked me. there was the index.php file! and there was another folder from which i've seen nothing from the network tab. i finally got a lead!! i returned in the network tab, did a request to see the spgm folder and boooom a site appeared and i saw some files and folders from 2016. there was a spgm.js file and a spgm.php file. there was a contrib, flavors, gal and lang folders. then it once again clicked me! the lang folder was las updated this year in february. so i checked the folder and there were some files named lang with the extension named after their language and these files were last updated in 2016 so i left them alone. but there was this little snitch, this little 650K file named after the name of the school's site with the extension '.php' aaaaand it was last modified this year!!!! i was so excited! i thought i found a secret and different design of the site or something completely else! i clicked it and at first i was scared there was this black/red theme going on my screen and something was a little odd. there were no school announcements or event, nononoooo. this was still a tree structured view. at the top of the site it's written '!c99Shell v. 1.0...'

this was a big nono. i saw i could acces all kinds of folders. then i switched to the normal school website and tried to access a folder i have seen named userfiles and got a 403 forbidden error. wopsie. i then switched to the c99 shell website and tried to access the userfiles folder and my boy showed all of its contents. it was nakeeed naked. like very naked. and in the userfiles folder there were all, but i mean ALL files and folders they have on the server. there were a file with the salary of each job available in the school. some announcements. there was a list with all the students which failed classes. there were folders for contests they held. it was an absolute mess and i couldn't believe it.

i stopped and looked at the monitor. what have i done? just to learn some web programming i just leaked the server of the 3rd most famous high school in my country. image a black hat which would have seriously caused more damage. currently i am writing an email to the school to updrage their security because it is reaaaaly bad.

and the journy didn't end here. i 'hacked' the site 2 days ago and just now i thought about writing an email to the school. after i found i could access the WHOLE server i searched for the real attacker so if you want to knkw how this one went let me know in the comments.
sorry for the long post, but couldn't held it anymore