How to find out which interfaces use dhcp?

pepe0121 · 08-30-2010, 05:35 AM

Hello all,

This may be a very basic question but I was wondering if there is a way through the command line to find out which interfaces are using dhcp. I'm using Ubuntu 9.10 in case that makes a difference.

Thank you in advance.

smoker · 08-30-2010, 06:11 AM

Code:

cat /etc/network/interfaces | grep dhcp

vinaytp · 08-30-2010, 06:30 AM

For Debian family of distros

Code:

cat /etc/network/interfaces | grep dhcp

For Redhat family of distros

Code:

 find /etc/sysconfig/network-scripts/ -name "ifcfg-*" | xargs grep -i dhcp

chrism01 · 08-30-2010, 08:32 PM

Re RH soln;

grep -i dhcp /etc/sysconfig/network-scripts/ifcfg*

would be simpler

pepe0121 · 09-01-2010, 12:10 PM

Thank you for your help!

smilemukul · 09-01-2010, 01:25 PM

Also how can I see the dchp ip address through ifconfig command

Thanks

smoker · 09-01-2010, 03:26 PM

You can see the ip address with ifconfig, you can't see what defined the ip address without looking at the config file. (AFAIK)