ttp://pc11.2ch.net/test/read.cgi/tech/1215531152/692

@echo off
echo %time%
ruby -e "puts 'hello!'"
echo %time%
ruby -v
echo %PROCESSOR_IDENTIFIER%

を実行して

11:35:25.96
hello!
11:35:26.96
ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-mswin32]
x86 Family 6 Model 8 Stepping 6, GenuineIntel

だそうな