Ever missed the --do "code" option of REBOL?
This tiniest script implements it.
Usage: red reddo.red "code ..." or reddo "code ..." (latter calling reddo.bat wrapper)
Compile: red -r reddo.red if you wanna fix the Red version.
>reddo "print {Directory listing:} foreach x read %. [print [sp x]]"
Directory listing:
README.md
reddo.bat
reddo.red
test.bat