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As you can see, 
htop
 can be incredibly useful and has (for the most part) replaced the 
legacy 
top
 command that was popular in the past. The 
top
 command is available by 
default in Ubuntu Server and is worth a look, if only as a comparison to 
htop
. Like 
htop
, the 
top
 command gives you a list of processes running on your server, as well 
as their resource usage. There are no pretty meters and there is less customization 
possible, but the 
top
 command serves the same purpose. In most cases, though, 
htop
 
is probably your best bet going forward.
Summary
In this chapter, we learned how to monitor our server's resource usage. We began 
with a look at the commands we can use to investigate disk usage, and we also 
learned how to monitor memory usage as well. We also discussed swap, including 
what it is, why you'd want to have it, as well as how to create a swap file manually 
should the need to do so come up. We then took a look at load average and closed 
out the chapter by checking out 
htop
, which is my favorite utility for getting an 
overall look at resource usage on servers.
In 
Chapter 9
, 
Managing Storage Volumes
, we'll take a closer look at storage. In this 
chapter, we learned how to see how much is being used, but in the next we'll look at 
more advanced concepts surrounding storage, such as formatting volumes, adding 
additional volumes, and even LVM. See you there!
Further reading
•  Linux ate my RAM: 
https://www.linuxatemyram.com/

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