ip

1ip(选项)(对象)
2Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }
3       ip [ -force ] -batch filename

 1OBJECT := { link | address | addrlabel | route | rule | neigh | ntable |
 2       tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |
 3       netns | l2tp | macsec | tcp_metrics | token }
 4       
 5-V：显示指令版本信息；
 6-s：输出更详细的信息；
 7-f：强制使用指定的协议族；
 8-4：指定使用的网络层协议是IPv4协议；
 9-6：指定使用的网络层协议是IPv6协议；
10-0：输出信息每条记录输出一行，即使内容较多也不换行显示；
11-r：显示主机时，不使用IP地址，而使用主机的域名。

 1OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |
 2        -h[uman-readable] | -iec |
 3        -f[amily] { inet | inet6 | ipx | dnet | bridge | link } |
 4        -4 | -6 | -I | -D | -B | -0 |
 5        -l[oops] { maximum-addr-flush-attempts } |
 6        -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |
 7        -rc[vbuf] [size] | -n[etns] name | -a[ll] }
 8        
 9网络对象：指定要管理的网络对象；
10具体操作：对指定的网络对象完成具体操作；
11help：显示网络对象支持的操作命令的帮助信息。

 1ip link show                    # 显示网络接口信息
 2ip link set eth0 up             # 开启网卡
 3ip link set eth0 down            # 关闭网卡
 4ip link set eth0 promisc on      # 开启网卡的混合模式
 5ip link set eth0 promisc offi    # 关闭网卡的混合模式
 6ip link set eth0 txqueuelen 1200 # 设置网卡队列长度
 7ip link set eth0 mtu 1400        # 设置网卡最大传输单元
 8ip addr show     # 显示网卡IP信息
 9ip addr add 192.168.0.1/24 dev eth0 # 为eth0网卡添加一个新的IP地址192.168.0.1
10ip addr del 192.168.0.1/24 dev eth0 # 为eth0网卡删除一个IP地址192.168.0.1
11
12ip route show # 显示系统路由
13ip route add default via 192.168.1.254   # 设置系统默认路由
14ip route list                 # 查看路由信息
15ip route add 192.168.4.0/24  via  192.168.0.254 dev eth0 # 设置192.168.4.0网段的网关为192.168.0.254,数据走eth0接口
16ip route add default via  192.168.0.254  dev eth0        # 设置默认网关为192.168.0.254
17ip route del 192.168.4.0/24   # 删除192.168.4.0网段的网关
18ip route del default          # 删除默认路由
19ip route delete 192.168.1.0/24 dev eth0 # 删除路由

1[root@localhost ~]# ip link list
21: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
3    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
42: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
5    link/ether 00:16:3e:00:1e:51 brd ff:ff:ff:ff:ff:ff
63: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
7    link/ether 00:16:3e:00:1e:52 brd ff:ff:ff:ff:ff:ff

 1[root@localhost ~]# ip -s link list
 21: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
 3    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
 4    RX: bytes  packets  errors  dropped overrun mcast   
 5    5082831    56145    0       0       0       0      
 6    TX: bytes  packets  errors  dropped carrier collsns
 7    5082831    56145    0       0       0       0      
 82: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
 9    link/ether 00:16:3e:00:1e:51 brd ff:ff:ff:ff:ff:ff
10    RX: bytes  packets  errors  dropped overrun mcast   
11    3641655380 62027099 0       0       0       0      
12    TX: bytes  packets  errors  dropped carrier collsns
13    6155236    89160    0       0       0       0      
143: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
15    link/ether 00:16:3e:00:1e:52 brd ff:ff:ff:ff:ff:ff
16    RX: bytes  packets  errors  dropped overrun mcast   
17    2562136822 488237847 0       0       0       0      
18    TX: bytes  packets  errors  dropped carrier collsns
19    3486617396 9691081  0       0       0       0     

1[root@localhost ~]# ip route list 
2112.124.12.0/22 dev eth1  proto kernel  scope link  src 112.124.15.130
310.160.0.0/20 dev eth0  proto kernel  scope link  src 10.160.7.81
4192.168.0.0/16 via 10.160.15.247 dev eth0
5172.16.0.0/12 via 10.160.15.247 dev eth0
610.0.0.0/8 via 10.160.15.247 dev eth0
7default via 112.124.15.247 dev eth1

1[root@localhost ~]# ip neigh list
2112.124.15.247 dev eth1 lladdr 00:00:0c:9f:f3:88 REACHABLE
310.160.15.247 dev eth0 lladdr 00:00:0c:9f:f2:c0 STALE

1ip link | grep -E '^[0-9]' | awk -F: '{print $2}'