public static String getUserName() {
		if (userName == null) {
			userName = getCleanUserName(System.getProperty("user.name"));
		}
		return userName;
	}
Get the user that is running the application.  This name may be modified to
eliminate any spaces or leading domain name which may be present in Java's
{@code user.name} system property (see {@link #getCleanUserName(String)}).
@return the user name
Ghidra/Framework/Utility/src/main/java/ghidra/util/SystemUtilities.java