After using pi user login via VNC graphical interface, the need to modify some of the files when prompted enough authority,
Use sudo to run the command line on it. Or directly use the root account.
Modify the administrator password: sudo passwd root
Modify Enable Administrator Login: sudo passwd --unlock root
Of course, there is some small command-line partners feel too much trouble, or not accustomed to using the command line to operate, after all, accustomed to using Windows.
Or what alternative file manager do? Modify a little something to play a lot of good trouble command, refer to the following operations to try.
Use sudo pcmanfm command to open the file manager on the line, and then modify your files.
