As per the instruction for PSET7 I need to do execute the following in the terminal window.
sudo gedit /etc/hosts
In order to make changes in "read-only" file
Executing the above give me this error
No protocol specified ** (gedit:24020): WARNING **: Could not open X display No protocol specified (gedit:24020): Gtk-WARNING **: cannot open display: :0.0
How should I deal with this issue