Rick Scherer posted a post about some reference cards for VMware admins. The vmreference card by Forbes Guthrie is a well know one but the other two reference cards mentioned by Rick are also nice to have.
First is the vmreference VI3 card by Forbes Guthrie over at www.vmreference.com
Second and third are VI3 Command References and Linux Command References from the VMware Deploy, Secure & Analyze class.
Source: http://vmwaretips.com/wp/2008/12/12/esx-reference-cards/
ICT-Freak.nl 