It's amazing how quickly you can fill up a hard-drive, especially if you're a power-user. ISO's, Zip file's, and truckloads of family footage can bust the seems of any hard drive in an eye blink. I had run across a utility that helped visually identify where all the space was going and thanks to a recent post on Lifehacker, I've had a friendly reminder of where to find it.

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Here's a list of commands and some examples of output, as well as some general Cisco errata. This is typically something I distribute when doing training for people at a CCNA level or lower. I'll be putting together a more advanced one more applicable to a CCNP level.

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