sudo ppa-purge -s debian.sur5r.net -o i3_dists_yakkety -p universe
[sudo] password for mmalakchi:
Updating packages lists
E: Malformed entry 1 in list file /etc/apt/sources.list.d/sur5r.list (Component)
E: The list of sources could not be read.
Warning:  apt-get update failed for some reason