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How to Use Sar (System Activity Reporter) | Linux Essential Commands with Jay LaCroix
The System Activity Reporter (Sar) is a utility program for analyzing Linux system performance. Sar is a do-it-all monitoring tool that is part of the Sysstat system resource utilities package. Linux administrators should learn sar for its wide range of utility features. This video shows you how to install and configure sar on your Debian or Ubuntu Linux system. You also learn several useful commands to get you started collecting data about your Linux system’s activity.
The Echo Command | Linux Essential Commands
As the name suggests, the echo command echoes the text or string that you want it to display. You can also use the echo command to display the files or directories, write to a file, or use it with other commands. In this video, we'll cover some common use cases for the echo command.