Red Squirrel
No Lifer
In my experience, more than clicking the shutdown button in Win7 by accident...
I find the command line is generally much safer than GUI as GUI (especially when remoted in) depends a lot on physical accuracy and it's easier to click the wrong thing especially with lag or with cat attacking the hand or stepping on the keyboard. With command line you actually have to type it.
However there's always the classic mistake of doing the command on the wrong server. Or hitting the up key and enter too fast forgetting the last time you remoted that server, you rebooted it. Been there done that.
"Ok time to turn off this test VM"
shutdown
"Weird, why is my website down. FUUUuuuuuuuuuuu"