(Not really a command per-se, but a way to get there.)

For those of you that find yourself going to Start > Run > "cmd" a lot, you can cut down some steps.

Say you want to get your IP address. You would normally go Start > Run > "cmd" [enter] then...

ipconfig [enter]

Now instead, go...

Start > Run > "cmd /k ipconfig"

This will run cmd and the command 'ipconfig', and it will keep the window open. So if I want to quickly get my MAC address (physical address), I'd do:

cmd /k ipconfig /all

...all from the run menu in one line.

All courtesy of BostonMark