show the BSC log output on the screen when there is activity
This?
sudo journalctl -u osmo-bsc -f
The fine art is to adjust the logging levels so that you see enough information, but not too much.
Just as an example from osmo-bsc.cfg:
log stderr logging filter all 1 logging color 1 logging print level 1 logging print category 1 logging print category-hex 0 logging print file basename last logging timestamp 0 logging print extended-timestamp 1 logging level set-all info logging level linp notice logging level lss7 notice logging level lsccp notice logging level lsua notice logging level lm3ua notice
There are many other ways to configure logging, see the alternatives 'log stderr', 'log file', 'log gsmtap'...
~N