"Edward C. Jones" <edcjones@comcast.net> writes: > 1. Use "su" to become root. > > 2. Run "apt-key list". If you can use sudo later on, why not for this step too? > 3. If key 4F368D5D is not present, run (as a single line) "wget > http://ftp-master.debian.org/ziyi_key_2005.asc -O - | sudo apt-key add -"