linux判断网卡是否接了网线（linux怎么查看网卡是光口还是电口）

具体代码如下

1. 查看网卡是否连接网线

[root@PLASPACSHCN13 ~]# mii-tool

2. 查看指定网卡是否连接网线

[root@PLASPACSHCN14 ~]# mii-tool eth0

eth0: negotiated 100baseTx-FD, link ok

3. 给网卡配置ip地址，然后ping这个ip地址即可。

4. [root@PLASPACSHCN14 ~]# ethtool eth1

Settings for eth1:

Supported ports: [ TP ]

Supported link modes:   10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

1000baseT/Half 1000baseT/Full

Supports auto-negotiation: Yes

Advertised link modes:  10baseT/Half 10baseT/Full