.bat

Contains a series of line commands that typically might be entered at the DOS command prompt; most commonly used to start programs and run maintenance utilities within Windows.

BAT files can be manually created and edited to automate tasks and perform repetitive operations; they can written with a basic text editor, such as Notepad, and saved with a ".bat" extension.

Important: You should not open unknown BAT files, as they may contain executable viruses or other malicious code.