I am new to linux and Enhanced machine control.  Put I am trying to change the values in an INI file.  I try to save the file and it will not allow me to do so.  I have looked this over and I think that it will not allow me to save it in the folder because I do not own the folder "root" does.  My question is how do I find out what the password for root is.  I installed this version of Ubuntu and emc2.  I just need to be able to save this file in the folder it came from.