How to display IP address of all interface for a shell script?

Question

I want to display all.network interface for a script, including vip.

 ~]$ /sbin/ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:50:56:90:88:37  
          inet addr:192.168.1.15  Bcast:192.168.1.31  Mask:255.255.255.224
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9786341 errors:0 dropped:152 overruns:0 frame:0
          TX packets:10162602 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6846599961 (6529.4 Mb)  TX bytes:2951709145 (2814.9 Mb)

eth1      Link encap:Ethernet  HWaddr 00:50:56:90:E1:2E  
          inet addr:25.10.100.15  Bcast:25.10.100.31  Mask:255.255.255.224
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:42436 errors:0 dropped:150 overruns:0 frame:0
          TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:5484037 (5.2 Mb)  TX bytes:2446 (2.3 Kb)

Like this

 eth0   00:50:56:90:88:37  192.168.1.15 MTU:1500
 eth0   00:50:56:90:E1:2E  25.10.100.15 MTU:1500

Please help to get this

Thanks in advance

Answer 1

You can use awk and set the record separator to an empty line, for example this

/sbin/ifconfig  | awk -v RS='' '{print $14}'

will print

MTU:1500
MTU:1500

so just pick the fields you want.