With Saidar you can display and view all your system statistics.
For an installation in Ubuntu or Debian you can install this with following command:
sudo apt-get install saidar
After having installed it, you can type in the command saidar:
Now you see in the following screen a complete view of your CPU, processes, load, memory, swap network I/O and disks I/O along with their free space.
The following options are supported:
-d (Wait DELAY seconds between updates (default 3))
-v (Prints the version number)
-h (Display help and exits)
That's it! Thanks to Planetfox for this tipp.