Monitor Your Network with Speedometer (Linux)

Sometimes you got your network connection was not running as normal as usual. Maybe too slow, or no connection at all. But you couldn't make sure what happened with your network. This tool, named Speedometer maybe useful for you. Speedometer is a tool to measure and display the rate of data across a network connection. So you could monitor your network.

How to install Speedometer?
sudo apt-get install speedometer
To run this tool type on the terminal :
speedometer -rx ppp0 
or
speedometer -tx ppp0
rx : bytes received
tx : bytes transmitted