Following line recursively deletes only HIDDEN files with .mta extension
del /S /A:H <folder_name> *.mta
What I want to do is, to delete both: hidden and normal files with .mta extension. How to do it?
Use /a on its own: del /s /a *.mta
eg:
C:\temp\z>attrib *
A H C:\temp\z\hidden
A C:\temp\z\normal
C:\temp\z>del /s /a *
C:\temp\z\*, Are you sure (Y/N)? y
Deleted file - C:\temp\z\hidden
Deleted file - C:\temp\z\normal