ip

gxxc@gxxc-NBLK-WAX9X:~$ ip r
default via 10.16.45.1 dev wlp2s0 proto dhcp metric 600 
10.16.45.0/24 dev wlp2s0 proto kernel scope link src 10.16.45.90 metric 600 
169.254.0.0/16 dev wlp2s0 scope link metric 1000 

其中，10.16.45.1就是网关地址

nmcli

gxxc@gxxc-NBLK-WAX9X:~$ nmcli device show wlp2s0 
GENERAL.DEVICE:                         wlp2s0
GENERAL.TYPE:                           wifi
GENERAL.HWADDR:                         1C:BF:C0:C0:79:45
GENERAL.MTU:                            1500
GENERAL.STATE:                          100（已连接）
GENERAL.CONNECTION:                     X
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/3
IP4.ADDRESS[1]:                         10.16.45.90/24
IP4.GATEWAY:                            10.16.45.1
IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 10.16.45.1, mt = 600
IP4.ROUTE[2]:                           dst = 10.16.45.0/24, nh = 0.0.0.0, mt = 600
IP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]:                             10.16.45.1
IP6.ADDRESS[1]:                         fe80::3491:83f4:d42f:f165/64
IP6.GATEWAY:                            --
IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 600
IP6.DNS[1]:                             fe80::cabf:4cff:fe05:e36b

其中，IP4.GATEWAY: 10.16.45.1就是网关, wlp2s0是网卡名称