Batch
Microsoft Knowledge Base Articles, Scripting, Tools, Utilities, Batch FAQ, Batch File Applications, Batch File Help, Batch File Tips and Utilities, Batch Files for Efficiency, Batch Guide, Batch Programming Elements, Batch Programming Stuff, Batch Scripting Site, Batfiles: The DOS Batch File Programming Handbook
LIDO Command Interpreter
A shell running on DOS that converts Linux shell commands to DOS.