nmcli是一款能够方便我们配置网络的工具，能够轻松的查看网卡信息或网络状态：
实例1：查看网卡信息
[root@localhost ~]# nmcli connection show
名称 UUID 类型 设备
virbr0-nic 7f3a7bb5-a7ab-440c-b87f-d94e6f4dd96b --ethernet virbr0-nic
virbr0 ff7c93dd-05ae---77218b2ad5dd bridge virbr0
eno16777736 ce2fa92b-adf1--84c2-988f2ffcd07d --ethernet eno16777736
实例2：查看网卡的连接状态
[root@localhost ~]# nmcli device status
设备 类型 状态 CONNECTION
virbr0 bridge 连接的 virbr0
eno16777736 ethernet 连接的 eno16777736
virbr0-nic ethernet 连接的 virbr0-nic
lo loopback 未管理 --
实例３：查看网卡的详细信息
[root@localhost ~]# nmcli connection show eno16777736
connection.id: eno16777736
connection.uuid: ce2fa92b-adf1--84c2-988f2ffcd07d
connection.interface-name: eno16777736
connection.type: --ethernet
connection.autoconnect: yes
connection.autoconnect-priority:
connection.timestamp:
connection.read-only: no
connection.permissions:
connection.zone: --
connection.master: --
connection.slave-type: --
connection.autoconnect-slaves: - (default)
connection.secondaries:
connection.gateway-ping-timeout:
connection.metered: 未知
--ethernet.port: --
--ethernet.speed:
--ethernet.duplex: --
--ethernet.auto-negotiate: yes
--ethernet.mac-address: --
--ethernet.cloned-mac-address: --
--ethernet.mac-address-blacklist:
--ethernet.mtu: 自动
--ethernet.s390-subchannels:
--ethernet.s390-nettype: --
--ethernet.s390-options:
--ethernet.wake-on-lan: (default)
--ethernet.wake-on-lan-password: --
ipv4.method: auto
ipv4.dns:
ipv4.dns-search:
ipv4.addresses:
ipv4.gateway: --
ipv4.routes:
ipv4.route-metric: -
ipv4.ignore-auto-routes: no
ipv4.ignore-auto-dns: no
ipv4.dhcp-client-id: --
ipv4.dhcp-send-hostname: yes
ipv4.dhcp-hostname: --
ipv4.never-default: no
ipv4.may-fail: yes
ipv6.method: auto
ipv6.dns:
ipv6.dns-search:
ipv6.addresses:
ipv6.gateway: --
ipv6.routes:
ipv6.route-metric: -
ipv6.ignore-auto-routes: no
ipv6.ignore-auto-dns: no
ipv6.never-default: no
ipv6.may-fail: yes
ipv6.ip6-privacy: - (未知)
ipv6.dhcp-send-hostname: yes
ipv6.dhcp-hostname: --
GENERAL.名称: eno16777736
GENERAL.UUID: ce2fa92b-adf1--84c2-988f2ffcd07d
GENERAL.设备: eno16777736
GENERAL.状态: 已激活
GENERAL.默认: 是
GENERAL.DEFAULT6: 否
GENERAL.VPN: 否
GENERAL.ZONE: --
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/ActiveConnection/
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/Settings/
GENERAL.SPEC 对象: /
GENERAL.MASTER-PATH: --
IP4.地址[]: 192.168.157.135/
IP4.网关: 192.168.157.2
IP4.DNS[]: 192.168.157.2
IP4.域[]: localdomain
DHCP4.选项[]: requested_domain_search =
DHCP4.选项[]: requested_nis_domain =
DHCP4.选项[]: requested_time_offset =
DHCP4.选项[]: requested_broadcast_address =
DHCP4.选项[]: requested_rfc3442_classless_static_routes =
DHCP4.选项[]: requested_classless_static_routes =
DHCP4.选项[]: requested_domain_name =
DHCP4.选项[]: expiry =
DHCP4.选项[]: domain_name = localdomain
DHCP4.选项[]: next_server = 192.168.157.254
DHCP4.选项[]: broadcast_address = 192.168.157.255
DHCP4.选项[]: dhcp_message_type =
DHCP4.选项[]: requested_subnet_mask =
DHCP4.选项[]: dhcp_lease_time =
DHCP4.选项[]: routers = 192.168.157.2
DHCP4.选项[]: ip_address = 192.168.157.135
DHCP4.选项[]: requested_static_routes =
DHCP4.选项[]: requested_interface_mtu =
DHCP4.选项[]: requested_nis_servers =
DHCP4.选项[]: requested_wpad =
DHCP4.选项[]: requested_ntp_servers =
DHCP4.选项[]: requested_domain_name_servers =
DHCP4.选项[]: domain_name_servers = 192.168.157.2
DHCP4.选项[]: requested_ms_classless_static_routes =
DHCP4.选项[]: requested_routers =
DHCP4.选项[]: subnet_mask = 255.255.255.0
DHCP4.选项[]: network_number = 192.168.157.0
DHCP4.选项[]: requested_host_name =
DHCP4.选项[]: dhcp_server_identifier = 192.168.157.254
IP6.地址[]: fe80::20c:29ff:fe74:71c9/
IP6.网关: