Memory is still one of the things that most determines how well your Unix servers will perform. Knowing what commands will tell you what you need to know and what their responses mean will help keep ...

Let’s look at some basic commands that report on memory usage. The first that probably comes to mind is free. The free command will tell you about used and unused memory and about swap space. Physical ...

Linux users have a lot of software to be proud of. However, there is the occasional Windows program that does something you’d really like to do and it just won’t run. This is especially true of ...

When it comes to system administration, one of the earliest decisions to be made is how to configure swap space. Many readers already are thinking they know what to do: throw in as much RAM as you can ...

iotop works like top, but it watches your disk instead of your CPU.