The .bat file is a batch file in Windows, which consists of several commands that will run via the Command Prompt interface. This enables the user to perform several automatic actions such as copying files, creating folders, starting programs, etc. Rather than writing each command separately, you can store all of them in one file and then execute it. You can write or view a .bat file with the help of a text editor like Notepad. But be cautious while opening a batch file, since it may contain some commands that will change your system settings, delete some files, or start up other programs.