I'm trying to install i3 desktop environment and I just can't figure out how. I'm following tutorial here.
and I'm stuck on the line:
echo "deb http://debian.sur5r.net/i3/ $(grep '^DISTRIB_CODENAME=' /etc/lsb-release | cut -f2 -d=) universe" >> /etc/apt/sources.list.d/sur5r-i3.list
My terminal says Permission denied
