Download a file from the Internet

Question

Introduction

Yes, it's as simple as that. Download any file from the internet!

Rules

You must use your language's API.

You must output the file you downloaded to STDOUT, the console, a file, etc.

Input should be empty, or the URL you wish to download, but the url must count to byte count..

Good luck!

Answer 1

Bash, 21 17 11 9 7 bytes

curl ai

Answer 2

Röda, 29 bytes

{saveResource"http://ai","a"}

This is an anonymous function that creates a file a containing the HTML code of http://ai.

Answer 3

MATL, 8 bytes

'v.ht'Xi

The URL provided to Xi (urlread) is prepended with http:// if it isn't already. Additionally the output of urlread contains the contents of the response and this is implicitly printed when the program exits.

Unfortunately this does not work for the online compilers since loading data from an arbitrary URL is disallowed in online-mode, so here's a GIF.

Answer 4

Bash, 45 43 bytes

exec 3<>/dev/tcp/ai/80;echo GET />&3;cat<&3

opens a tcp socket with ai site on file descriptor 3, issues a get, and cats the result. perhaps can be golfed further.

Answer 5

Mathematica 18 Bytes

URLDownload@"v.ht"

Answer 6

PowerShell, 7 Bytes

Since we're all using www.ai...

irm ai.

uses Invoke-RestMethod - prints the result to StdOut

alternate answer, saves to file named 'a' in run directory, using Invoke-WebRequest and -OutFile param.

iwr ai. -OutF a

Answer 7

C#, 96 93 bytes

async()=>Console.Write(await new System.Net.Http.HttpClient().GetStringAsync("http://3.ly"));

Answer 8

JS (ES6), 38 36 31 29 bytes

fetch`//ai`.then(x=>x.text())

Depending on the promise consensus, (41 bytes)

fetch`//ai`.then(x=>x.text()).then(alert)

Answer 9

PHP, 22 bytes

If allow_url_include=1 is in your ini file:

<?=include"http://ai";   

Answer 10

Python 2, 55 49 47 bytes

Not shorter but I really thought I could go further.

from urllib import*
urlopen('http://ai').read

Answer 11

R, 24 bytes

readLines('http://g.co')

prints the output to console in the usual R format -- vector of strings, one element per line of the site.

Answer 12

Mathematica, 13 bytes

URLFetch@"ai"

Answer 13

Vim Ex command, 14 bytes

e http://3.ly/

Opens the URL as a new buffer. Netrw seriously suffers from a restrictive URL format.

Answer 14

nc -v v.ht 80 < file - 31 bytes

Where file contains:

GET / HTTP/1.1\r\n
Host: v.ht\r\n
\r\n

I profess ignorance about how I should score this. The file is 31 bytes and contains the URL I want, the -v flag value decides if I get the file I want or an error response.

Answer 15

Kdb+, 34 15 bytes

KDB+ >= 3.4

 q).Q.hg`http://ai

from here.

KDB+ < 3.4

q)`:http://ai"GET / HTTP/1.0",4#"\n"
"HTTP/1.1 200 OK\r\nDate: Thu, 11 May 2017 21:45:01 GMT\r\nServer: Apache/1.3..

Answer 16

Racket, 71 bytes

(require net/url)(port->string(get-pure-port(string->url"http://ai")))

Answer 17

Python + requests, 55 53 50 bytes

from requests import*
print(get('http://ai').text)

-2 bytes by switching URLs -3 bytes thanks to ovs

Answer 18

Vim, 2 + 12 = 14 bytes

gf

Expects the URL http://3.ly/ as input. gf opens the current file under the cursor. Thanks to netrw, this works fine for URLs. I found this just now while trying to remember the command to open URLs in your browser (found it, it's gx).

Answer 19

HTML, 24 bytes

<iframe src="http://ai">

This technically fails as it renders the result...

Answer 20

PowerShell, 62 bytes

PowerShell 5

-join[char[]][net.webclient]::new().downloaddata('http://ai.')

66 bytes for more older versions of PowerShell

-join[char[]](new-object net.webclient).downloaddata('http://ai.')

Answer 21

AHK, 31 bytes

URLDownloadToFile,http://g.co,g

There's a built-in so it's not very exciting. Try to fashion, though, the function is fairly long.

Answer 22

Bash + wget, 7 bytes

wget ai

Downloads the page at http://ai

Answer 23

Ruby, 27 + 10 = 37 bytes

puts open('http://ai').read

+10 bytes for -ropen-uri flag (to require open-uri library)

Answer 24

Perl, 41 bytes

$ perl -MLWP::UserAgent -e 'getstore($url)'

Answer 25

Pyth, 4 + 11 = 15 bytes

jk'z

With URL http://v.ht as input. Takes an URL string as input, downloads the file, and prints its content.

Explanation:

jk'z
   z    Get the input string (URL)
  '     Download the file from the URL, return a list of lines
jk      Join the list on k which is the empty string

Note that we cannot use the function s for concatenating the list because of bytes types issues.

Slightly cheating, 2 + 11 = 13 bytes (it displays the list of the lines in the file instead of a single string for the whole file):

'z

You will need to install Pyth on your machine to test it (the online interpreter does not execute unsafe operations).

Answer 26

C#, 76 bytes

Console.WriteLine(new System.Net.WebClient().DownloadString("http://3.ly"));

Answer 27

MATLAB, 20 bytes

urlread('http://ai')

Nothing fancy here...