Command-line: 解析IP地址

本作品采用知识共享署名-非商业性使用-相同方式共享 3.0 Unported许可协议进行许可。允许非商业转载，但应注明作者及出处。
作者：liuyuan_jq

2011-01-12

---

[root@localhost ~]# ifconfig

eth1 Link encap:Ethernet HWaddr C8:3A:35:D6:5A:79

inet addr:192.168.2.84 Bcast:192.168.2.255 Mask:255.255.255.0

inet6 addr: fe80::ca3a:35ff:fed6:5a79/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:28137 errors:0 dropped:267 overruns:0 frame:0

TX packets:4476 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:2522664 (2.4 MiB) TX bytes:863925 (843.6 KiB)

Interrupt:177 Base address:0x6c00

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:16 errors:0 dropped:0 overruns:0 frame:0

TX packets:16 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:960 (960.0 b) TX bytes:960 (960.0 b)

---

[root@localhost ~]# ifconfig | grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'

inet addr:192.168.2.84 Bcast:192.168.2.255 Mask:255.255.255.0

inet addr:127.0.0.1 Mask:255.0.0.0

---

[root@localhost ~]# ifconfig | grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' | grep -v '127'

inet addr:192.168.2.84 Bcast:192.168.2.255 Mask:255.255.255.0

---

[root@localhost ~]# ifconfig | grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' | grep -v '127'| cut -d: -f2

192.168.2.84 Bcast

---

[root@localhost ~]# ifconfig | grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' | grep -v '127'| cut -d: -f2 | awk '{print $1}'

192.168.2.84

---