Batch convert dwg to dxf, and replace or update a block

[Anonymous]

Hello,

I am just starting to learn how to wright lisp. So please don't post bits and pieces of script for me to add into the edit box. I have been trying all of the bits and pieces that are posted all over the site and can't get it all together. I'm a new be and have found some tanning material and make an effort to learn how to wright. But I need some lisp now and I don't have the time to what until I have the skills for now.  

Please post a link to the lisp I need.

1. Convert DWG to DXF

                       A. It needs to open a directory and extract .dwg. (Which could be 50 to 100 dwg plus)

                       B. Convert to .dxf file format.

2. Replace or Update a block. (This can be another lisp)

                       A. It needs to open a directory and extract .dwg. (Which could be 50 to 100 .dwg plus)

                       B. Replace or Update a block in the drawing      

Thank you to all,

Please help

Nick

[pendean]

While you wait....

All you need is a script file with DXFOUT parameters you wish to use in it, and a script processing tool like these to run it on many files in many folders
ScriptPro https://knowledge.autodesk.com/support/autocad/downloads/caas/downloads/content/autodesk-customizati...
AutoSCript
http://www.cadig.com/products/autocad-script-pro.php

How to write an AutoCAD Script file
http://www.lee-mac.com/scriptwriting.html
http://www.ellenfinkelstein.com/acadblog/tutorial-automate-tasks-with-a-script-file/
http://www.cadoasis.com/write-run-script-files-autocad/

A sample DXFOUT script discussion
http://www.cadtutor.net/forum/showthread.php?78141-Script-using-DXFOUT-amp-DXFIN

[Anonymous]

I have tried ScriptPro. I made a lisp for it to save as dxf one file at a time, it would run in autocad and convert the file to dxf. But ScriptPro would run the script but nothing would happen. So ScriptPro would act like it was run but not give me the dxf file. I did a search to see if it placed the file in some other directory but no luck.

Thank you for your suggestion.

Nick