Copying streams to video/audio files using vlc

If you ever need to save a stream (either audio or video) to a file, you can do it by using vlc.

You will find more details here: http://www.dedoimedo.com/computers/vlc-streaming.html

Wifi analyzer

If by any chance, you would like to see what is the wifi state around you, in order for example to pick the best channel for your own wireless device, and you do not have a wifi analyzer in an android device, you do not need to look far.

NetworkManager has got you covered. Just execute:
nmcli d wifi

on your linux console and you are done.