像这样编辑任何文件时：
r@ngf:~$ sudo gedit /etc/default/grub
[sudo] password for r:
(gedit:1638): Gtk-WARNING **: Attempting to store changes into `/root/.local/share/recently-used.xbel', but failed: ?? ??????? ??????? ???? «/root/.local/share/recently-used.xbel.CJP8XV»: ??? ?????? ????? ??? ????????
(gedit:1638): Gtk-WARNING **: Attempting to set the permissions of `/root/.local/share/recently-used.xbel', but failed: ??? ?????? ????? ??? ????????
(gedit:1638): Gtk-WARNING **: Attempting to store changes into `/root/.local/share/recently-used.xbel', but failed: ?? ??????? ??????? ???? «/root/.local/share/recently-used.xbel.W8MHYV»: ??? ?????? ????? ??? ????????
(gedit:1638): Gtk-WARNING **: Attempting to set the permissions of `/root/.local/share/recently-used.xbel', but failed: …