Curl : Linux , unix

Curl (https://curl.haxx.se/docs/httpscripting.html )

Note : space = %20

See the Protocol $curl --trace-ascii debugdump.txt http://www.example.com/

See the Timing     $curl --trace-ascii d.txt --trace-time http://example.com/

See the Response -o or -O.

Host        $curl --resolve www.example.org:80:127.0.0.1 http://www.example.org/

Port number

$curl http://www.example.org:1234/

$curl --proxy http://proxy.example.org:4321 http://remote.example.org/

User name and password  $curl -u user:password http://example.org/

GET         $curl https://curl.haxx.se

ONLY the headers  (--head (-I))

Save file $ curl http://www.example.com -0 example.html

Multiple URLs (get)             $curl http://url1.example.com http://url2.example.com

To send first a HEAD and then a GET:$ curl http://www.tutorialspoint.com -0 tutorialspoint.html

Redirect  $ curl www.tutorialspoint.com/unix/ --location

A GET-form uses the method GET, as specified in HTML like:

 <form method="GET" action="junk.cgi">

 <input type=text name="birthyear">

 <input type=submit name=press value="OK">

 </form>

$curl "http://www.hotmail.com/when/junk.cgi?birthyear=1905&press=OK"

POST

<form method="POST" action="junk.cgi">

 <input type=text name="birthyear">

 <input type=submit name=press value=" OK ">

 </form>

$curl --data "birthyear=1905&press=%20OK%20"  http://www.example.com/when.cgi

$curl --data-urlencode "name=I am Daniel" http://www.example.com

(replaces  space with %20)

File Upload POST

<form method="POST" enctype='multipart/form-data' action="upload.cgi">

 <input type=file name=upload>

 <input type=submit name=press value="OK">

</form>

$curl --form upload=@localfilename --form press=OK [URL]

Hidden Fields

<form method="POST" action="foobar.cgi">

 <input type=text name="birthyear">

 <input type=hidden name="person" value="daniel">

 <input type=submit name="press" value="OK">

</form>

$curl --data "birthyear=1905&press=OK&person=daniel" [URL]

send a POST and then a GET:

$curl -d score=10 http://example.com/post.cgi --next http://example.com/results.html

two POSTs $curl --data name=$curl http://url1.example.com http://url2.example.com

PUT         $curl --upload-file uploadfile http://www.example.com/receive.cgi

Basic Authentication           $curl --user name:password http://www.example.com

Other Authentication         --ntlm, --digest, --negotiate ,--anyauth

Proxy Authentication         $curl --proxy-user proxyuser:proxypassword $curl.haxx.se