Hypertext Transfer Protocol
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HTML
The primary benefit of saving a file in HTML format is that you can view it in a web browser. Files should be saved in a format that is compatible with the application using the file.
tdin, stdout, stderr (standard input,standard output,standard error).
There is no such standard since different architectures support different executable formats while some support multiple formats. For instance, Windows 32-bit supports MZ (DOS) and PE format, while 64-bit also supports PE32+, all of which have an EXE file extension. Windows also supports the older COM (DOS) format. But, as with most file extensions, the extension is simply a method of organising files by type and for associating file types to specific applications, but they tell you nothing about the file itself. Only by physically loading the file and examining its header (if it has one) can the operating system determine its actual type. In other words, renaming a COM file to an EXE file doesn't actually change the file type; it has to be completely recompiled from source. The Apple Mac doesn't use extensions in the same way Windows does (many Mac files have no extension at all), but machine code executables are in the Preferred Executable Format (PEF), also known as Code Fragment Manager (CFM) files. Linux (and Unix) typically use the Executable and Link Format (ELF). Although each format obviously has its own standard header, there is no standard header that applies to all executables across all architectures.
Because you are ilegally downloading songs, go pay a dollar for songs.