I think /sbin/ifconfig displays at least the ip address, the hardware address and the subnet mask and some other stuff. But not much about anything else like DHCP or DNS addresses...
I have two hard drives and the partitioning is as follows:
hda1 120 GB
/dev/hda1 100 MB Linux ext3 /boot
/dev/hda2 95 GB Linux ext3 /home
/dev/hda3 1 GB Linux swap
/dev/hdb4 Extended partition
/dev/hdb5 17 GB Linux /
hdb1 32 GB
/dev/hdb1 100 MB Linux ext3 /boot
/dev/hdb2 1 GB Linux swap
/dev/hdb3 Extended partition
/dev/hdb4 12 GB NTFS Windows2000
/dev/hdb5 18 GB Linux reiserfs
I thought wine might run better from a real windows install. So I resized my partitions to free some 8 GB space. Unfortunately the partitioning software was not really great as I lost one of my partitions (the one where I had stored all of my downloads...). So I decided to go for a clean start and formatted the whole hard disk. First I partitioned the disk using cfdisk.