Saidar is a free and open source command-line system statistics viewer for Linux. It is a a curses-based application to view your linux system information. It is based on libstatgrab and you can use Saidar as a real time system monitoring tool in your system. You can check CPU, processes, load, memory, swap, network I/O, disk I/O, and file system information using this tool. It is a simple and easy to use tool.