Linux commands – Debian config x-session-manager

How to switch x-session-manager?

Use the following command:

sudo update-alternatives --config x-session-manager

Select Gnome, and the following command:

sudo update-alternatives --config x-window-manager

Make sudo command execution passwordless

sudo visudo

In editor change line

%sudo   ALL=(ALL:ALL) ALL

to

%sudo   ALL=(ALL:ALL) NOPASSWD:ALL