I don't know much about windows but does it not have a $PATH like in POSIX systems? I seem to remember that typing "run cmd.exe" worked without having to give the full path of "cmd.exe".
Yes it's very similar. `;` separated rather than `:` (Because of the drive specifier e.g. `C:\`) and classically embedded variables surrounded with % e.g. `%JAVA_HOME%`, although these days powershell just uses $ variables just like everybody else.
