Saidar is a curses-based tool for viewing the system statistics avail-able through libstatgrab. Statistics include CPU, processes, load, memory, swap, network I/O, disk I/O, and file system information.

Saidar can be installed by apt-get command for Ubuntu and Debian:

sudo apt-get install saidar

Then you can execute this to get system statistics in command line:

saidar

Or using -c to get colored output:

saidar -c

Using -d to set DELAY seconds between updates (default 3):

saidar -d 5