Ign http://deb.opera.com stable/non-free Translation-en_GB
Ign http://deb.opera.com stable/non-free Translation-en
Fetched 2,774 B in 1s (2,002 B/s)
W: Failed to fetch http://ppa.launchpad.net/rvm/mplayer/ubuntu/dists/precise/main/source/Sources  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/rvm/mplayer/ubuntu/dists/precise/main/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.
tking@TKing-HP-PC:~$ sudo add-apt-repository --remove ppa:http://ppa.launchpad.net precise/main
Error: need a repository as argument
tking@TKing-HP-PC:~$ sudo add-apt-repository --remove ppa:precise/main Cannot access PPA (https://launchpad.net/api/1.0/~precise/+archive/main) to get PPA information, please check your internet connection.
tking@TKing-HP-PC:~$