ip命令用法归纳

ip是iproute2工具包里面的一个命令行工具，用于配置网络接口以及路由表。iproute2正在逐步取代旧的net-tools (ifconfig)，所以是时候学习下iproute2的使用方法啦～

[root@gdocker ~]# man ip
IP(8)                                                          Linux                                                         IP(8)

NAME
      ip - show / manipulate routing, devices, policy routing and tunnels

SYNOPSIS
      ip [ OPTIONS ] OBJECT { COMMAND | help }

ip [ -force ] -batch filename

OBJECT := { link | address | addrlabel | route | rule | neigh | ntable | tunnel | tuntap | maddress | mroute | mrule | mon‐
              itor | xfrm | netns | l2tp | tcp_metrics | token | macsec }

OPTIONS := { -V[ersion] | -h[uman-readable] | -s[tatistics] | -d[etails] | -r[esolve] | -iec | -f[amily] { inet | inet6 |
              ipx | dnet | link } | -4 | -6 | -I | -D | -B | -0 | -l[oops] { maximum-addr-flush-attempts } | -o[neline] |
              -rc[vbuf] [size] | -t[imestamp] | -ts[hort] | -n[etns] name | -a[ll] | -c[olor] }

OPTIONS
      -V, -Version
             Print the version of the ip utility and exit.

-h, -human, -human-readable
             output statistics with human readable values followed by suffix.

-b, -batch <FILENAME>
             Read commands from provided file or standard input and invoke them.  First failure will cause termination of ip.

-force Don't terminate ip on errors in batch mode.  If there were any errors during execution of the commands, the applica‐
             tion return code will be non zero.

-s, -stats, -statistics
             Output more information. If the option appears twice or more, the amount of information increases.  As a rule, the
             information is statistics or some time values.

-d, -details
             Output more detailed information.

-l, -loops <COUNT>
             Specify maximum number of loops the 'ip address flush' logic will attempt before giving up. The default is 10.  Zero
             (0) means loop until all addresses are removed.

-f, -family <FAMILY>
             Specifies the protocol family to use. The protocol family identifier can be one of inet, inet6, bridge, ipx, dnet,
             mpls or link.  If this option is not present, the protocol family is guessed from other arguments. If the rest of
             the command line does not give enough information to guess the family, ip falls back to the default one, usually
             inet or any.  link is a special family identifier meaning that no networking protocol is involved.

-4     shortcut for -family inet.

-6     shortcut for -family inet6.

-B     shortcut for -family bridge.

-D     shortcut for -family decnet.

-I     shortcut for -family ipx.

-M     shortcut for -family mpls.

-0     shortcut for -family link.

-o, -oneline
             output each record on a single line, replacing line feeds with the '\' character. This is convenient when you want
             to count records with wc(1) or to grep(1) the output.

-r, -resolve
             use the system's name resolver to print DNS names instead of host addresses.

-n, -netns <NETNS>
             switches ip to the specified network namespace NETNS.  Actually it just simplifies executing of:

ip netns exec NETNS ip [ OPTIONS ] OBJECT { COMMAND | help }

to

ip -n[etns] NETNS [ OPTIONS ] OBJECT { COMMAND | help }

-a, -all
             executes specified command over all objects, it depends if command supports this option.

-c, -color
             Use color output.

-t, -timestamp
             display current time when using monitor option.

-ts, -tshort
             Like -timestamp, but use shorter format.

-rc, -rcvbuf<SIZE>
             Set the netlink socket receive buffer size, defaults to 1MB.

-iec   print human readable rates in IEC units (e.g. 1Ki = 1024).