AdocScrx  

AdocScript can execute a series of commands on a number of AutoCAD drawings in batch mode.

Simply select a directory with drawings and a script file with commands and run! Subdirectories can be included as well. 

Script style commands can be mixed with AutoCAD's  internal properties and methods.

AdocScript can handle the most common dialogs that tend to "hang" AutoCAD when loading "problematic" drawings.