Linux Curl 用法

curl 是用HTTP、FTP等协议取得一个服务器上的内容。

不加任何参数是将网页源码取下来：

curl ifconfig.me
curl mitnk.com

可以用 -i 来同时取得 HTTP-header：

curl -i ifconfig.me

而用 -I 只取 HEADER 本身：

curl -I mitnk.com
curl -I www.google.com/ncr

-o Write output to a file instead of stdout. -O Write output to a local file named like the remote file we get.

curl mitnk.com
curl mitnk.com -o index.html
curl http://mitnk.com/site_media/images/djangosite.gif
curl -O http://mitnk.com/site_media/images/djangosite.gif

-L (HTTP/HTTPS) If the server reports that the requested page has moved to a different location (indicated with a Location: header and a 3XX response kode), this option will make curl redo the request on the new place.

curl www.mitnk.com
curl -L www.mitnk.com

curl -LI google.com/ncr

-A (HTTP) Specify the User-Agent string to send to the HTTP server.

curl mitnk.com/webapps/user_agent/
curl -A "My little rebot" mitnk.com/webapps/user_agent/

-v Make the fetching more verbose. Mostly useful for debugging. -x Use the specified HTTP proxy. --socks5 Use socket 5 proxy

curl -v www.mitnk.com
curl -x xxx.xxx.xxx.xxx:3128 www.python.org/download/
curl -IL --socks5 127.0.0.1:7070 http://t.co/w8pAFpP

-b (HTTP) Pass the data to the HTTP server as a cookie. -e (HTTP) Sends the "Referer Page" information to the HTTP server.

curl -b "name=joe;passwd=123456" mitnk.com
curl -e mitnk.com/ -LI mitnk.com/1

--max-time 整个过程限时 --connect-timeout 连接服务器的时间限制

curl --connect-timeout 10 --max-time 30 www.youtube.com

以上命令为获取youtube的内容，但如果10秒内没有连接上服务器，curl退出。如果整个获取时间超过30秒的话，curl也退出。

--header 请求时定制HEADER内容

curl --header 'good: morning' --header 'bad: afternoon' www.google.com

POST Requests:

With fields:

curl --data "param1=value1&param2=value2" http://example.com/resource.cgi

Multipart:

curl --form "fileupload=@filename.txt" http://example.com/resource.cgi

Without data:

curl --data '' http://example.com/resource.cgi
curl -X POST http://example.com/resource.cgi
curl --request POST http://example.com/resource.cgi

These post request examples are from Superuser.com

实例

Send HTTP DELETE

curl -X DELETE http://127.0.0.1:8000/api/entry/4/