creates a file /etc/apt/sources.list.d/sevenmachines-release+1-lucid.list.
However, man sources.list says
File names need to end with .list and may only contain letters (a-z and A-Z), digits (0-9), underscore (_), hyphen (-) and period (.) characters. Otherwise they will be silently ignored.
For example:
apt-add-repository ppa:sevenmachin es/release+ 1
creates a file /etc/apt/ sources. list.d/ sevenmachines- release+ 1-lucid. list.
However, man sources.list says
File names need to end with .list and may only contain letters (a-z and A-Z), digits (0-9), underscore (_), hyphen (-) and period (.) characters. Otherwise they will be silently ignored.
So that's what happens.
Ubuntu 10.04 software- properties 0.75.10
python-