Curl is an open source file Transfer tool that works with URL syntax in the command line mode.
1 access to Web source
Install first;
2 Saving a retrieved page
Curl-o [file name] Www.sina.com
3 Auto Jump
Some of the pages are automatically jump, the following example; input with the-l parameter, automatically jump to www.sina.com.cn;
4 Displaying HTTP Headers
Display HTTP headers and web code;
As below,-I, only the HTTP headers are displayed;
5 Show Communication Process
The '-V ' parameter can display the entire process of an HTTP communication, including port connections and HTTP request header information.
6 Viewing a more detailed communication process
Use the--trace parameter to save the communication process to a text file;
Other can also send form, upload files, add header information, etc.;
Reference Links:
Http://www.ruanyifeng.com/blog/2011/09/curl.html
Graphical command line HTTP tool Curl using preliminary