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Shell正则表达式取IP地址

2018-03-03 17:59 302 查看

Shell正则表达式匹配取IP地址

演示服务器为虚拟服务器:

[root@GaoServer ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
inet 192.168.47.140  netmask 255.255.255.0  broadcast 192.168.47.255
inet6 fe80::20c:29ff:fe73:14b  prefixlen 64  scopeid 0x20<link>
ether 00:0c:29:73:01:4b  txqueuelen 1000  (Ethernet)
RX packets 991  bytes 81056 (79.1 KiB)
RX errors 0  dropped 0  overruns 0  frame 0
TX packets 474  bytes 64248 (62.7 KiB)
TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


取IP地址:

[root@GaoServer ~]# ifconfig eno16777736 | grep -Eoe "(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])" -Eoe '^(e|b)[[:lower:]]+[[:digit:]]+?'
eno16777736
192.168.47.140
255.255.255.0
192.168.47.255


部分物理服务器以em1,或bond等网卡名,可根据需求修改;

主要以正则:

(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])
来过滤合理IP地址;
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标签:  shell Linux