Memory is one of the most important parts of your Unix system for performance. Let's look at some commands that will tell you what you need to know about the memory on the systems you manage is ...

To help troubleshoot your Linux datacenter servers, you need the right tools. Jack Wallen introduces you to one such tool, iostat.

The lshw utility can tell you a little about your DRAM (try -C memory to limit the output). The dmidecode -t memory command can also display a few things. There are probably more.

Is your Linux server running out of storage space? If you're not sure how to find that out, these three commands are important to learn.