[ Thanks to Carla Schroder for this
link. ]
“Now that we have ripped out the stock guts out of our Linksys
WRT54G and replaced them with a miniature, but mighty, Linux
operating system, it’s time to configure it to do some actual
work…“Remember, none of these settings are committed to NVRAM until
you enter the nvram commit command. As long as you do not write to
NVRAM, you can safely test new commands, and reboot to a known good
configuration if something goes wrong. When everything works right
then you can commit…”