Windows 確認君
ALLUSERSPROFILE APPDATA CommonProgramFiles COMPUTERNAME ComSpec HOMEDRIVE HOMEPATH LOGONSERVER NUMBER_OF_PROCESSORS OS Os2LibPath Path PATHEXT PROCESSOR_ARCHITECTURE PROCESSOR_IDENTIFIER PROCESSOR_LEVEL PROCESSOR_REVISION ProgramFiles PROMPT SystemDrive SystemRoot TEMP TMP USERDNSDOMAIN USERDOMAIN USERNAME USERPROFILE windir
PROMPTはだめ。