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Original address: http://www.thegeekstuff.com/2012/04/curl-examples/Download a single file and print the output to standard output (STDOUT) by defaultCurl http://www.centos.org Save the downloaded file to the specified file with the-o/-o option: -o:

Basic concepts related to network programming1. Computer Network and Internet2. TCP/IP protocol3. Internet address---ip address, shaped like xxx.xxx.xxx.xxx---Domain Name System. such as www.edu.cn*url (Uniform Resource Locator)Protocol://HOST [:

HTTP Entity Header HTTP Entity Header table of Contents Encoding Control transfer encoding chunked coding Range Differential encoding Content-type type content-length length

On the Windows platform, js can call many ActivexObject provided by Windows. This article uses js to implement document processing, and uses js to compile ActiveX for a brief introduction. Copy codeThe Code is as follows: New Document In

How to use the Model in Django, djangomodel Preface This article mainly introduces the relevant content about the Model used in Django, and shares it for your reference and learning. I will not talk about it much below. Let's take a look at the

Javascript file operations (IE) I. function implementation core: FileSystemObject objectTo implement file operations in javascript, FileSystemobject objects are primarily used.Ii. FileSystemObject ProgrammingIt is very easy to program with

A closer look at how RRDTOOL is structured. The syntax is indeed cumbersome, but not too difficult. Each time the command line is executed, it must be output as a file. We hope to make an application to dynamically generate charts and look at the

1. function: supports resumable download, compute the transfer rate, and control the transfer rate. easy to use: The code is as follows: $ Object = new httpdownload (); $ Object-> set_byfile ($ file) % N # H # %; // server file name, including

The Phpheader () function syntax and usage code are described in detail. common status codes of headers are listed here. Syntax: The code is as follows: Void header (string $ string [, bool $ replace = true [, int $ http_response_code) Send the

Phpheader () function syntax and code. Syntax: Copy the code as follows: Voidheader (string $ string [, bool $ replacetrue [, int $ http_response_code) to send the original HTTP Header to the client. note: The Header function must be in Syntax: The

This chapter explains how to use the file API and the drag-and-drop API in HTML 5.    HTML5 's file API, which allows you to directly display information about a client file or the contents of a file in a browser, and drag-and-drop APIs, you can

& Lt; html & gt; & lt; title & gt; learn DOM & lt;/title & gt; & lt; aid & quot; wen & quot; & gt; text & lt;/a & gt; & lt; inputname & quot; myinput & quot; type & quot; text & quot; & gt; & lt; inputname & quot; myi Learn DOMTextThe attributes of

Javascript-File OperationsI. function implementation core: FileSystemObject objectTo implement file operations in javascript, FileSystemobject objects are primarily used.Ii. FileSystemObject ProgrammingIt is very easy to program with

HotMetal PRO 6.0 is a powerful and easy-to-use website editing and publishing tool. In this tutorial, we use javascript in HotMetal. In HotMetal, JavaScript Supports rich resources and Objects Based on HotMetal. It contains several new objects, such

The HTTP header of HTML controls the cache information of the page in several places, including browser, intermediate Cache Server (such as squid), and Web server. This article discusses the caching of HTML pages with Cache Control Information in

Web application Performance optimization Golden rule: Optimize the performance of the Front End program (front-end) first, as this is the cost of 80% or more of the end-user response time. Rule 1. Reduce the number of HTTP requests80% of End-user

I. function implementation core: FileSystemObject objectTo implement file operations in javascript, FileSystemobject objects are primarily used.Ii. FileSystemObject ProgrammingIt is very easy to program with FileSystemObject object. Generally, the

One, connect to the Web serverA client application (such as a Web browser) opens a socket to the HTTP port of the Web server (default is 80).Example: http://www.myweb.com:8080/index.htmlIn Java, this is equivalent to code:Soceet socket=new socket

HTTP protocol Cache controlFirst request when the second request 304 not modified to modify the stateExplanation: There are some cache servers on the network, and the browser itself has caching capabilities. When we first visited a picture, the

English Original: http://developer.yahoo.com/performance/rules.htmlChinese Original: http://www.ha97.com/2710.html1. Minimize the number of HTTP requests 80% of the end-user response time is used to download the content. This part of the time