batch script delete file containining certain chars

Question

I have almost no experience in batch, but now I need a script to delete all files that contain certain characters in their names from a folder and its subfolders

Answer 1

The /s switch exists on quite a few commands (including del)

del /s "C:\TEST\TEST2\*.TXT"

The help for del /? says:

/S            Delete specified files from all subdirectories.