ifconfig 查看网卡信息

[root@linux-node-192 sss]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.91  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::250:56ff:fe2c:72d4  prefixlen 64  scopeid 0x20<link>
        ether 00:50:56:2c:72:d4  txqueuelen 1000  (Ethernet)
        RX packets 10722  bytes 6648138 (6.3 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5907  bytes 664017 (648.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 3906  bytes 271808 (265.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3906  bytes 271808 (265.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ifup eth0          //启动指定网卡
ifdown eth0     //关闭指定网卡