"ipconfig" of windows in linux
 

My cable service is kind of screwy. If I just recently cut the power-off the cable modem and then start it, it can't process a connection right away so in Windows, I have to use "ipconfig /renew" once my modem's "cable" light stops blinking.

I read somewhere about "ifconfig" but I can't recognize the equivalent option to the "/renew" tag.

Try this:
ifdown eth0
ifup eth0

I don't seem to have ifup and ifdown (tried searching for it and looking at /sbin )

Do you have another suggestion? thanks.

(Using slackware 9.0 btw)

Does ifconfig exist?
try:
ifconfig eth0 down
ifconfig eth0 up

yup, the both commands work, thanks.