Each month I create roughly 200 Excel files, 100 files are the old school "XLS" Excel files, then those files are turned into new "XLSX" files.
So there are two files with identical names, but with different extensions. I want to delete all of the "XLS" files but not the "XLSX" files. Each month the file names are different.
%let path= c:\temp\a ; data _null_; rc=filename('x',"&path."); did=dopen('x'); do i=1 to dnum(did); fname=dread(did,i); if upcase(scan(fname,-1,'.'))='XLS' then do; rc=filename('y',cats("&path.\",fname)); rc=fdelete('y'); end; end; did=dclose(did); run;
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