netspeed – Traffic monitor applet for GNOME
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Install netspeed in Ubuntu
sudo aptitude install netspeed
This will complete the installation.
Configuring Netspeed
If you want to add netspeed to to your desktop.Right click on the free area of the upper panel and select "Add to Panel".
Once it opens you should see similar to the following screen here you need to select Add "System Monitor" and "Network Monitor" and click on add
If you want to configure system monitor select System Monitor and right click select preferences
Here you can select which options you want to disply
Sample System Monitor Screenshot
If you want to configure Network Monitor select System Monitor and right click select preferences
Network device sample configuration