The file extention of any application on a computer is: '.exe'
.exe = simply means executable.
A file name is the main name given to a file, such as document.docx. The file extension, represented by the characters after the dot, indicates the type of file and helps the operating system identify which software to use to open the file. For example, in document.docx, ".docx" is the file extension indicating that it is a Microsoft Word document.
not all file names have two parts. MacOS - MacOS9 the filenames were one solid line - macintosh_video_file. The application data was hidden in the resource fork. On Unixes and DOS boxes a file name consists of file name and extension.
The second part of a file name is typically referred to as the file extension, which follows the last period in the name. It identifies the file type and helps the operating system determine which application should open it. For example, in the file name "document.txt," "txt" is the file extension indicating it's a text file.
A file name that identifies the file's type and indicates the application that created it typically includes a file extension, which is a suffix added to the base name of the file, preceded by a dot. For example, a file named "document.docx" indicates that it's a Microsoft Word document. The ".docx" extension specifies the file type and suggests the application used to create it. Other examples include ".xlsx" for Excel spreadsheets and ".jpg" for image files.
The default file extension for notepad is .txt. However, you can designate notepad as the primary application for any extension.
The part of a file name that determines which program to use for opening it is called the "file extension." It typically consists of a period followed by a few letters, such as ".txt" for text files or ".jpg" for image files. The operating system uses this extension to associate the file with the appropriate application.
Database Management Systems, or DBMS, are software applications specially designed to interact with the user and other applications, as well as the database itself, to analyze data. All files in a software have file name extensions to identify their file types. For memory files .mem is the file name extension.
The main project file has a VBPROJ extension. This is also a file with the same name as the main project file, but with an SLN extension. The SLN extension is a solution file.
. (Dot)
It is a batch command file.
Close the process. Then, re-open it as an application with a batch file: Start "program name" [no extension] /high "Location of Program".
It doesn't use any part of the file. It gets the extension (the part after the dot) of the file name, and looks that up in the registry to see what program should be used to open, for example, a .doc file.