Linux查看网卡状态的几条命令

nmcli device status

如果提示找不到命令，需要安装
ubuntu

apt install network-manager nmcli

Centos

yum install NetworkManager nmcli

安装完成后，就可以通过命令nmcli device status查看

[root@Server]# nmcli device status
DEVICE  TYPE      STATE                   CONNECTION 
ens192  ethernet  connected               ens192     
virbr0  bridge    connected (externally)  virbr0     
lo      loopback  unmanaged               --     

ifconfig

[root@Server]# ifconfig
ens192: flags=4163  mtu 1500
        inet 10.248.1.155  netmask 255.255.255.0  broadcast 10.248.1.255
        inet6 fe80::250:56ff:fea9:22fa  prefixlen 64  scopeid 0x20
        ether 00:50:56:aa:bb:cc  txqueuelen 1000  (Ethernet)
        RX packets 25568390  bytes 2355628882 (2.1 GiB)
        RX errors 0  dropped 6651  overruns 0  frame 0
        TX packets 22823642  bytes 5783764164 (5.3 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 477430  bytes 46700592 (44.5 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 477430  bytes 46700592 (44.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ip add show

[root@Server]# ip add show
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens192:  mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:50:56:aa:bb:cc brd ff:ff:ff:ff:ff:ff
    inet 10.248.1.155/24 brd 10.248.1.255 scope global noprefixroute ens192
       valid_lft forever preferred_lft forever
    inet6 fe80::250:56ff:fea9:22fa/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

ip link show

[root@Server]# ip link show
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens192:  mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
    link/ether 00:50:56:aa:bb:cc brd ff:ff:ff:ff:ff:ff
3: virbr0:  mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default qlen 1000
    link/ether 52:54:00:37:dd:19 brd ff:ff:ff:ff:ff:ff