rem   removes all trailing spaces from each file iterated,
rem   and saves them into subfolder "trimmed".
rem
rem   here all files in the current directory, with
rem   extension "properties" and trailing spaces inside, get
rem   matched for the loop
rem
rem   NOTE: requires grep and sed on the PATH, use
rem   http://unxutils.sourceforge.net/ for example
 

mkdir trimmed

for /F "usebackq" %%f in (`grep -l -e " $" *.properties`) do sed -e "s/ *$//" %%f > trimmed\%%f