FOR /R "C:UsersDummyDesktopUATSample" %%G in (.) DO (
Pushd %%G
Echo now in %%G
echo before
dir
dir "*-01202018*"

REM ren *-01202018.txt *.txt
REM ren ???-01202018.txt ???.txt
REM rename 's/-01202018//' *
REM rename "*-01202018*" "*/////////*"

echo after
dir
Popd )
Echo "back home"

PAUSE