It is very easy. (At least on my ubuntu 10.04 machine, where byobu uses screen.);
If you already have one session running, and do not want to reattach but instad create a new one, just type:
byobu -S my-other-session
Where my-other-session is how you are naming the new session.
Later, if you have already more than one byobu sessions running, it is sufficient to type
byobu
And you will be presented with a list of running sessions to choose from:
Byobu sessions...
1. 17680.my-other-session (03/12/2012 01:33:32 PM) (Detached)
2. 11890.pts-2.mit (01/15/2012 09:17:49 AM) (Detached)
3. Create a new session
Choose 1-3 [1]:
If typing byobu
dos not present a list of running sessions to choose from, try the byobu-select-session
command.
The pts-2.mit session was the one I created initially without giving it a name, so the name was chosen by boybu.
If you want to find out which sessions are running, without attaching to any of them, use
byobu -ls
It drops you again at the console where you typed it after showing a list like:
There are screens on:
17680.my-other-session (03/12/2012 01:33:31 PM) (Detached)
11890.pts-2.mit (01/15/2012 09:17:48 AM) (Detached)
2 Sockets in /var/run/screen/S-root.