You want to view network performance on the command line
To view the network performance without some X window system you can use the nload program. This program will show you network performance on the command line as text. Nload shows you the incoming and the outgoing traffic.
To install on a debian system you can use
apt-get install nload
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.