windows dos; legacy dos

I'm working on analysing data in txt format. Data are in about 22000 files, in one main directory under many sub and sub sub-directories. Each file has a different number of data records. Each data record starts with the word "Type" and consists of a number of segments separated by "%" (percent...

I have one directory with hundreds of sub and sub sub directories down the tree with a total number of text files over 22000 files. I need to copy one file with .qwz extension to every sub directory that contains text files. Copies of the .qwz file will be in the same number of existing text...