Finding out basic information about your hardware
If you've inheritted a bunch of machines, or have only a single generic server in front of you, then you might be curious to learn what hardware you have. Thankfully it is very simple to discover information about your system, even remotely.
The initial things that you are liable to be interested in are the processor you're using and the amount of memory installed upon the host. Both of these can be identified by reading from the virtual /proc filesystem.