Be able to choose session by number in lttng list command
When we list the session with lttng list we get a list prefixed by number
Available tracing sessions:
1) test (/home/scientist/lttng-traces/test-20120618-142554) [inactive]
It seems natural after that to use this number when we want to have the detail of a session
lttng list 1
instead of doing lttng list test
(Its particularly painfull with the auto generated names.