linux 命令之 ip

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ip 命令的语法

ip [OPTIONS] OBJECT {COMMAND | help}
OPTIONS是修改ip行为或者改变其输出的选项。
-V : 打印ip的版本并退出-s :输出更为详细的信息。如果这个选项出现两次或者多次,输出的信息将更为详细。-f : 这个选项后接协议种类,包括 inet、inet6、link。表明强调使用的协议种类。(link代表不涉及任何网络协议)。-4 :是-f inet 的简写。-6 :是-f inet6 的简写。-0 :是-f link 的简写。-o :对每条记录都使用单行输出。-r :查询域名解析系统,用获得的主机名代替主机IP地址。

OBJECT 是要管理或者获取信息的对象。
link :网络设备address : 一个设备的协议(IP 或 IPV6)地址。neighbour:ARP或者NDISC缓冲区条目。route :路由表条目。maddress :多播地址。mroute :多播路由缓冲区条目。tunnel : IP上的通道。
COMMAND 针对指定对象执行的操作,它和对象的类型有关。一般情况下,支持对象的增加(add)、删除(delete)和展示(show或者list)。可以使用 ip OBJECT help 命令查看这个对象支持的操作和语法。

示例说明:

$ ip help            Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }       ip [ -force ] -batch filenamewhere  OBJECT := { link | addr | addrlabel | route | rule | neigh | ntable |                   tunnel | tuntap | maddr | mroute | mrule | monitor | xfrm |                   netns }       OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |                    -f[amily] { inet | inet6 | ipx | dnet | link } |                    -l[oops] { maximum-addr-flush-attempts } |                    -o[neline] | -t[imestamp] | -b[atch] [filename] |                    -rc[vbuf] [size]}## 列出ip命令的信息。

$ ip link helpUsage: ip link add [link DEV] [ name ] NAME                   [ txqueuelen PACKETS ]                   [ address LLADDR ]                   [ broadcast LLADDR ]                   [ mtu MTU ]                   type TYPE [ ARGS ]       ip link delete DEV type TYPE [ ARGS ]       ip link set { dev DEVICE | group DEVGROUP } [ { up | down } ]                  [ arp { on | off } ]                  [ dynamic { on | off } ]                  [ multicast { on | off } ]                  [ allmulticast { on | off } ]                  [ promisc { on | off } ]                  [ trailers { on | off } ]                  [ txqueuelen PACKETS ]                  [ name NEWNAME ]                  [ address LLADDR ]                  [ broadcast LLADDR ]                  [ mtu MTU ]                  [ netns PID ]                  [ netns NAME ]  [ alias NAME ]                  [ vf NUM [ mac LLADDR ]   [ vlan VLANID [ qos VLAN-QOS ] ]   [ rate TXRATE ] ]   [ master DEVICE ]  [ nomaster ]       ip link show [ DEVICE | group GROUP ]TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | can | bridge }##列出link对象支持的动作以及语法信息。

$ ip link show eth02: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:46:6d:ae brd ff:ff:ff:ff:ff:ff##展示 设备eth0 的基本信息

$ ip -s link show eth02: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:46:6d:ae brd ff:ff:ff:ff:ff:ff    RX: bytes  packets  errors  dropped overrun mcast       4111724    8814     0       1       0       290        TX: bytes  packets  errors  dropped carrier collsns     131499     1339     0       0       0       0   ##展示 设备eth0 的详细信息

$ ip -s -s link show eth02: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:46:6d:ae brd ff:ff:ff:ff:ff:ff    RX: bytes  packets  errors  dropped overrun mcast       4111908    8816     0       1       0       290        RX errors: length  crc     frame   fifo    missed               0        0       0       0       0          TX: bytes  packets  errors  dropped carrier collsns     131499     1339     0       0       0       0          TX errors: aborted fifo    window  heartbeat               0        0       0       0      ##展示 设备eth0 更为详细的信息

$ ip addr1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo    inet6 ::1/128 scope host        valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:46:6d:ae brd ff:ff:ff:ff:ff:ff    inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0    inet6 fe80::a00:27ff:fe46:6dae/64 scope link        valid_lft forever preferred_lft forever## 显示ip地址

$ sudo ip addr add 10.0.2.14/24 brd + dev eth0   ## 在以太网接口eth0上增加一个地址 10.0.2.14。掩码长度为24位(255.255.255.0)标准广播地址。$ ip addr show dev eth0  ##查看添加后的地址2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:46:6d:ae brd ff:ff:ff:ff:ff:ff    inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0    inet 10.0.2.14/24 brd 10.0.2.255 scope global secondary eth0    inet6 fe80::a00:27ff:fe46:6dae/64 scope link        valid_lft forever preferred_lft forever$ sudo ip addr del 10.0.2.14/24 brd + dev eth0  ##删除 10.0.2.14 这个地址




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