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Perl code:
abc ~ # ifconfig
eth0 Link encap:Ethernet HWaddr 00:1e:ec:c1:94:75
inet addr:10.2.0.144 Bcast:10.2.1.255 Mask:255.255.254.0
inet6 addr: fe80::21e:ecff:fec1:9475/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:864 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:80473 (78.5 KiB) TX bytes:2548 (2.4 KiB)
Interrupt:17

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:388 errors:0 dropped:0 overruns:0 frame:0
TX packets:388 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:31276 (30.5 KiB) TX bytes:31276 (30.5 KiB)


abc ~ # route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.2.0.0 * 255.255.254.0 U 0 0 0 eth0
loopback * 255.0.0.0 U 0 0 0 lo
default 10.2.1.254 0.0.0.0 UG 0 0 0 eth0



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