cURL is a CLI tool for issuing HTTP GET, POST, & PUT request.

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65
votes
2answers
65k views

Does curl have a --no-check-certificate option like wget?

I am trying to make a curl request to one of our local development servers running a dev site with a self-signed SSL cert. I am using curl from the command line. I saw some blog posts mentioning that ...
44
votes
3answers
13k views

What is the difference between curl and wget?

I am keen to know the difference between curl and wget. Both are used to get files and documents but what the key difference between them. Why are there two different programs?
28
votes
4answers
13k views

Throttle the download speed of wget or curl while downloading

Is it possible to throttle (limit) the download speed of wget or curl ? Is it possible to change the throttle value while it is downloading ?
25
votes
3answers
36k views

Does curl have a timeout?

So far I couldn't find anything really, but is it true that curl doesn't really time out at all? user@host:~# curl http://localhost/testdir/image.jpg I'm asking because I'm redirecting any request ...
21
votes
3answers
11k views

why would curl and wget result in a 403 forbidden?

I try to download a file with wget and curl and it is rejected with a 403 error (forbidden). I can view the file using the web browser on the same machine. I try again with my browser's user agent, ...
18
votes
1answer
1k views

What does the @ (at) symbol before a filename mean in a curl command?

I am looking at an example of a curl command that uses the @ symbol before the filename to post data to the server. curl http://localhost/ --data-binary @file.txt What does this mean? Does it ...
15
votes
2answers
19k views

Any way to encode the url in curl command?

I have some url which has space in it's query param. I want to use this in curl, e.g. curl -G "http://localhost:30001/data?zip=47401&utc_begin=2013-8-1 00:00:00&utc_end=2013-8-2 ...
10
votes
4answers
7k views

Most straightforward way of getting a raw, unparsed HTTPS response

What would be the most straightforward way of making a GET request to a url over HTTPS, and getting the raw, unparsed response? Could this be achieved with curl? If so, what options would you need to ...
9
votes
3answers
7k views

Get URL's redirect target with curl

I would like to check where a single URL redirects. An example of that could be a link from Google's search result page (where a click always goes through Google server). Can I do that with curl?
9
votes
1answer
7k views

Passing binary data to curl without using a @file

Is it possible to use curl and post binary data without passing in a file name? For example, you can post a form using binary via --data-binary: curl -X POST --data-binary @myfile.bin http://foo.com ...
8
votes
3answers
3k views

Automating web requests using curl?

I have some "corporative" systems I have to use at work. Some of them are terrible, with frames, pop-ups and such. I was thinking about automating some stuff using curl or something like that. I need ...
8
votes
5answers
2k views

Read and confirm shell script before piping from curl to sh (curl -s [url] | sh)

Whenever I have to execute a shell script from the web curl -s [url] | sh, I first open url in my web browser to make sure the script isn't malicious and is safe to run. I remember seeing a command ...
7
votes
6answers
2k views

Is there a way to use curl interactively? Or is there an interactive curl/wget shell?

Imagine something like this: $ curlsh http://www.example.org > GET /foo/bar/bam ...output here... > POST /thing/pool ... ... result here.... is there a tool that lets me do that?
7
votes
2answers
487 views

Are there any good tools besides SeleniumRC that can fetch webpages including content post-painted by JavaScript?

One major shortcoming of curl is that more and more wepages are having their main piece of content painted by a JavaScript AJAX response that occurs after the initial HTTP response. curl never picks ...
6
votes
3answers
5k views

How do I use curl to download content from sourceforge?

Simply typing http://downloads.sourceforge.net/project/romfs/genromfs/0.5.2/genromfs-0.5.2.tar.gz works fine on a browser, but I'm trying to download from a CLI environment with limited utilities. ...
6
votes
2answers
2k views

Can't understand this script. bash <<(curl -s http://xxx.com)

In a rails book, the author wrote the script to install ruby rvm. bash <<(curl -s https://rvm.beginrescueend.com/install/rvm) But I don't understand how it works. Could you explain this?
6
votes
2answers
1k views

Pipe Password to Application When Asked

The following should be done in a bash script: curl --digest --user schmijos https://bitbucket.org/u/p/get/tip.zip -o tip.zip How can I automatically submit a password to curl when it asks for it? ...
6
votes
3answers
1k views

How to tweet using terminal?

I would like to tweet a message using terminal. I tried something like: curl -u 'TwitterUsername':'TwitterPassword' -d status=”Your Message Here” https://twitter.com/statuses/update.xml but seems ...
6
votes
1answer
560 views

How to download all images whose size>100kb in a webpage?

I want to download images contained in some web pages, but only those that are larger than 100 KB. So far I've been downloading all the images and then deleting the small ones, but it's not very ...
5
votes
1answer
3k views

How to grep the output of cURL?

I need to retrieve the expiry date of an SSL cert. The curl application does provide this information: $ curl -v https://google.com/ * Hostname was NOT found in DNS cache * Trying ...
5
votes
4answers
13k views

How do I get the http status of a site in bash?

I figure curl would do the job. I wrote in a bash script: #!/bin/sh function test { res=`curl -I $1 | grep HTTP/1.1 | awk {'print $2'}` if [ $res -ne 200 ] then echo "Error $res ...
5
votes
2answers
7k views

loop curl get request bash

I'm trying to automate a curl script and eventually make it loop also. I found that I can't use any loop like: for i in `cat authors` do curl *line here* ...
5
votes
2answers
2k views

Is there a command line method by which I can check whether a downloaded file is complete or broken?

I'm writing a script that involves downloading and manipulating a file, and I want to ensure that the file is not incomplete (due to e.g. a dropped connection) before I work on it.
5
votes
3answers
861 views

Crontab job not emailing on failure

I have a cron job on Debian: 1 * * * * /home/paradroid/bin/myscript.sh >/dev/null There is an installed and configured MTA, and I have received emails when the script has a syntax error, so I ...
5
votes
1answer
1k views

'watch'-ing curl yields unexpected output

I'm trying to watch curl for live feedback on HTTP tweaks. However, when I execute the command, the output is garbled with some download stats. I've tried sending curl's stderr to /dev/null, to no ...
5
votes
2answers
350 views

Make vim / curl recognize https:// links

I recently noticed vim/vimdiff can open links (using curl, it seems), which is an awesome feature. I wanted to use it today, like this: vimdiff deps ...
5
votes
3answers
693 views

download only first few bytes of a source page

I am downloading the HTML source page of a website using cURL command. The problem is, I do not want most of the contents in the page. I just need the first 100 lines of the source page. Is there a ...
5
votes
2answers
246 views

cURL <- feature

$ cat file | curl -F 'sprunge=<-' http://sprunge.us So the output of echo gets passed as a POST parameter to cURL. Is this a cURL specific feature?
4
votes
3answers
22k views

Set a network range in the no_proxy environment variable

I'm in a network using a proxy. I've got machines using lots of scripts here and there accessing each other over HTTP. The network is 10.0.0.0/8. My proxy is 10.1.1.1:81, so I set it up accordingly: ...
4
votes
3answers
261 views

Send first line of the HTTP Header

A normal HTTP request may look something like this: GET / HTTP/1.1 Host: example.com I would like to change the first line of this request, with a custom one, e.g.: FOOBAR NOT REALLY HTTP Host: ...
4
votes
2answers
4k views

How to check whether a command such as curl completed without error?

I am using curl to upload a file to a server via an HTTP post. curl -X POST -d@myfile.txt server-URL When I manually execute this command on the command line, I get a response from the server like ...
4
votes
3answers
2k views

How to download videos from Coursera with curl?

Downloading videos from Coursera is not as easy as copy and pasting the link in terminal. I also have tried exporting cookies from my browser in cookie.txt file and doing a: curl --cookie cookie.txt ...
3
votes
1answer
4k views

curl url call in for loop? [closed]

I am working with bash and I am trying to make a curl url call in a for loop. Below is my simple curl call - curl -v --header "Connection: keep-alive" ...
3
votes
3answers
3k views

Curl with ipv6 not working by default

I am trying to curl ipv6 addresses, but without success. If I try lets say: curl https://google.com I wait for a timeout and get network unreachable If I force ipv4, everything is fine. ...
3
votes
1answer
3k views

How can I queue up an entire directory for FTP?

Currently I know how to do this: curl -T file.zip ftp://server.domain.com/ --user username:password Which will let me do a single file. However I can't figure out how to do it for a directory. I ...
3
votes
1answer
305 views

cUrl : Argument list too long

Im getting an "Argument list too long" error when trying to use curl to send a file in base64 inside the body of my json. Im using something like this: DATA=$( base64 "$FILE" ) curl -X POST -H ...
3
votes
2answers
229 views

How can I check GMail messages with prompt for password from a script?

I'm using zsh on Ubuntu 14.04 over SSH using Putty and I'm setting up the key bindings for my keyboard. Because zsh doesn't seem to make use of my function keys I thought I'd setup scripts to do ...
3
votes
2answers
12k views

Using curl to access basic auth protected website via proxy (polipo)

I am trying to download a file protected via basic auth: curl "http://User:Pass@example.com/blub/bla.bin" This is working fine. As soon as I tell curl to use my locally installed polipo it fails: ...
3
votes
1answer
529 views

Given a mime-type get the corresponding file extension

I want to download a file using curl to a temporary directory with the appropriate extension. Currently I do something like this: tmp="$(mktemp -t 'curl')" curl -o "$tmp" ...
3
votes
2answers
6k views

cURL/wget - SSLv3, TLS handshake, CERT hangs

I have problems connecting to https sites using cURL or wget. When I download from a https curl seems to be stuck while doing the TLS handshake, CERT. The problem is independent of the site (I noticed ...
3
votes
1answer
603 views

How do I enable rsync in libcurl?

I'm on Arch. When pacman tries to download a package from an ftp server, It fails with the error message Protocol rsync not supported or disabled in libcurl This has been bugging me for a little ...
3
votes
2answers
4k views

Running thousands of curl background processes in parallel in bash script

I am running thounsand of curl background processes in parallel in the following bash script START=$(date +%s) for i in {1..100000} do curl -s "http://some_url_here/"$i > $i.txt& ...
2
votes
2answers
281 views

Can't install cURL on Linux Mint

I am trying to install cURL in order to be able to install the Ruby version manager. I write this: sudo apt-get update && apt-get install curl And get this output: E: Some index files ...
2
votes
2answers
2k views

twitter status updates from command line (via cURL) [duplicate]

Based on some samples: http://www.commandlinefu.com/commands/view/176/update-twitter-via-curl I'm trying to update my twitter status from command line (via cURL), but always get error. Any idea what ...
2
votes
2answers
845 views

what does Curl's stand-alone hyphen (-) mean?

what's the stand-alone hyphen (between the -C & -O) stand for in this command? curl -C - -O http://www.intersil.com/content/dam/Intersil/documents/fn67/fn6742.pdf FWIW- I'm following a ...
2
votes
1answer
5k views

curl --resolve appears to do nothing

The --help output for curl lists a --resolve option, which states --resolve <host:port:address> Force resolve of HOST:PORT to ADDRESS I'm not having any luck getting it to work though. The ...
2
votes
3answers
413 views

Source (.) piped curl output

I have a file, f, on my webserver with the following contents: alias ll='ls -l' I would like to (from another linux box) do the following, but I can't get the command right: curl http://myserver/f ...
2
votes
2answers
931 views

Puzzle: transfering files between two servers (ssh, ftp, http multipart…)

A puzzle: files being uploaded in realtime by SCP to SERVER1 need to be transfered to SERVER2. But: SERVER1 doesn't actually have network access to SERVER2 (NAT), however SERVER2 has SSH access to ...
2
votes
2answers
248 views

Is there a OS/user-wide log to log to?

I'm using curl to dowload a jar from a TESTDRIVE script and for debugging purposes it helps to log the http headers returned to a log file. But logging them in the working dir (where the script is ...
2
votes
1answer
616 views

Strange issue with curl/lynx and non resolving domains

I have a weird issue on my server in that if I use curl or lynx to try and access a URL that doesn't exist (say a non registered domain, or a domain that's not in DNS), I don't get an error, it ...