public static Path searchPath(String cmd) {
		String envPath = System.getenv("PATH");
		envPath = envPath != null ? envPath : "";
		return searchPath(cmd, envPath);
	}
Searches the locations defined by PATH for the given executable

@param cmd The name of the executable to look for
@return A Path to the executable, if found, null otherwise
src/main/java/dev/jbang/util/Util.java