Yeah WRT54G's are pretty tough little devices and probably why they are so popular. I used to use one for a small office I worked at with the factory firmware on it. I had 3 VoIP lines, 5 computers, and our all our T-mobile wife cell phones all connected to it. It worked pretty good for the most...
"sh runn" should work as it is short for "show running-config". It works on my test router:
brighthouse#sh runn
Building configuration...
Current configuration : 2664 bytes
!
! Last configuration change at 08:36:08 EST Wed Jul 7 2010 by admin
! NVRAM config last updated at 16:39:48 EST Sun...