A user agent is a computer program representing a person, for example, a browser in a Web context.
Besides a browser, a user agent could be a bot scraping webpages, a download manager, or another app accessing the Web. Along with each request they make to the server, browsers include a self-identifying User-Agent HTTP header called a user agent (UA) string. This string often identifies the browser, its version number, and its host operating system.
Spam bots, download managers, and some browsers often send a fake UA string to announce themselves as a different client. This is known as user agent spoofing.
A typical user agent string looks like this: "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0".
This hack will allow you to change the Sergeant of the Safari web browser on the Apple iPhone, iPad, or iPod Touch without having to jailbreak the device. Connect and sync your iOS device with iTunes on your computer.
We've got 1.2 million users agents for software running on iPhone. It's easy to search the millions of user agents we've got with the API.
The User-Agent tells the server what the visiting device is (among many other things) and this information can be used to determine what content to return. Of course this requires using a device detection solution which translates UAS into understandable software and hardware information.
User agent originated as port of browser scope.org's useragentparser project also known as UA- parser. User agent allows you to parse user agent string with high accuracy by using hand tuned dedicated regular expressions for browser matching.
Making statements based on opinion; back them up with references or personal experience. You can experiment with it using the latest publicly available Windows 10 build at this moment, which is 9879.
It indicates that InternetExplorer is compatible with a set of common features.MSI 9.0The Version token identifies the browser and contains the version number, as reported by the current browser mode. The example value indicates Windows InternetExplorer 9. Windows NT 6.1The Platform token identifies the operating system and version.