The scenario is that you’re connected to a remote machine via ssh and you want to run tcpdump and view the output in real time. Unfortunately, the output will include the ssh connection information as well and therefore it’s quite useless. The simple solution is to filter out ssh:
tcpdump [options] not port ssh
Thanks to http://forum.soft32.com/linux2/tcpdump-filter-examples-ftopict29715.html.
As I use bluetooth so rarely on my laptop, i wanted to find out how to disable the radio on startup in Ubuntu.
After a quick Google search, I found “How to disable Bluetooth on at autostart?” the provided the answer.
It’s a simple as adding:
/sbin/rfkill block bluetooth