Comparison with "ipconfig /all"

Hi,
Coming from a Windows admin background, I have grown very attached to the
"ipconfig /all". With one signal command, I have access to most of the
networking-related information I need including:
1 Connection-specific DNS Suffix  . : 
2 Description . . . . . . . . . . . : Realtek RTL8139 Famil
3 Physical Address. . . . . . . . . : 01-07-91-E2-44-19
4 Dhcp Enabled. . . . . . . . . . . : Yes
5 Autoconfiguration Enabled . . . . : Yes
6 IP Address. . . . . . . . . . . . : 192.168.98.162
7 Subnet Mask . . . . . . . . . . . : 255.255.255.0
8 Default Gateway . . . . . . . . . : 192.168.98.11
9 DHCP Server . . . . . . . . . . . : 192.168.98.1
10 DNS Servers . . . . . . . . . . . : 192.168.98.1
11 Lease Obtained. . . . . . . . . . : 2004 02 29 11:05:20
12 Lease Expires . . . . . . . . . . : 2004 03 08 11:05:20

I was wondering what the Linux equivalent would be to find each of these
pieces of information. Note: I am looking for commands that tell me the
actual values, rather than looking at the configuration files. So far, I use
a number of commands: 
ifconfig 2/3/6/7
Dig 10
Route 8
Any ideas how to get 9/11/12? Are there any more efficient/better ways to
get the information?
Regards,
Glyn

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