There are several occasions when we want to use sudo to run graphical applications with administrative permissions, for example: sudo gparted ó Sudo Dolphin
And many will have seen this error:
kzkggaara @ geass: ~ / Downloads $ sudo gparted
No protocol specified(gpartedbin: 6547): Gtk-WARNING **: cannot open display:: 0
Which prevents the application from opening (in this case gparted), a simple step will solve this little problem
We must open a terminal (console, bash, shell, whatever they want to call it ...) and put the following in it:
echo "" >> $HOME/.bashrc && echo "export XAUTHORITY=$HOME/.Xauthority" >> $HOME/.bashrc && cd $HOME && . .bashrc
We push [enter] and that's it, it will be solved
Simple no? HAHA.
regards