You will find several Windows / DOS batch file tutorial over internet. A batch file, which is also called batch program, contains one or more commands. file extension for a batch file is either .bat or .cmd. All command within the batch file run sequentially; however, there are three control commands, for, goto, and if, which can change this sequence based on a condition. There are special
. commands, goto, choice, and errorlevel, which you can only use within the batch file. For online batch file tutorial visit [http://www.computerhope.com/batch.htm].
