Conky – system monitor.
The installation command in Ubuntu:
sudo apt-get install conky
In CentOS/Fedora:
sudo yum install conky
Start command:
conky
At the first start, I displayed this window:
The configuration files are located in the /etc/conky/.
To read the built-in documentation, you can run the following command:
man conky
Example of launching in a background with an update interval of 2 sec.:
conky -d -u 2
To stop, you can use the command:
pkill conky