v:\> d /s v:\0.btm;cksum.exe
2018-03-26 21:45 11,591 0.btm
2017-01-15 14:30 47,104 cksum.exe
2017-01-15 14:30 53,760 cksum.exe
v:\> d /s /g v:\0.btm;cksum.exe
2018-03-26 21:45 4,096 0.btm
2017-01-15 14:30 32,768 cksum.exe
2017-01-15 14:30 36,864 cksum.exe
v:\> do f in /l v:\0.btm v:\cksum\32\cksum.exe v:\cksum\64\cksum.exe ( echo %@IPOW[%f] )
4096
32768
36864