blocks|key|221348|text|下面的代码可以在Linux上运行，但不能在OSX上运行。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|221349|这根本不依赖DNS，即使没有正确设置/etc/hosts+(1是1.0.0.0的缩写)，它也能正常工作：|offset|length|style|CODE|221350|ip+route+get+1+%7C+awk+'{print+$NF;exit}'|code-block|syntax|javascript|221351|或者避免使用awk，并在8.8.8.8上使用谷歌的公共域名，这是显而易见的：|221352|ip+route+get+8.8.8.8+%7C+head+-1+%7C+cut+-d'+'+-f8|221353|一种不太可靠的方式：(参见下面的评论)|221354|hostname+-I+%7C+cut+-d'+'+-f1|221355|entityMap^0|0|I|A|U|1|W|7|0|0|6|3|C|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]|$D|10|E|11|F|G]|$D|12|E|13|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|14|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|15|8|@$D|16|E|17|F|G]|$D|18|E|19|F|G]]|9|@]|A|$]]|$1|O|3|P|5|J|7|1A|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|1B|8|@]|9|@]|A|$]]|$1|S|3|T|5|J|7|1C|8|@]|9|@]|A|$K|L]]|$1|U|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|V|$]]

The following will work on Linux but not OSX.

This doesn't rely on DNS at all, and it works even if <code>/etc/hosts</code> is not set correctly (<code>1</code> is shorthand for <code>1.0.0.0</code>):

<pre><code>ip route get 1 | awk '{print $NF;exit}'
</code></pre>

or avoiding <code>awk</code> and using Google's public DNS at <code>8.8.8.8</code> for obviousness:

<pre><code>ip route get 8.8.8.8 | head -1 | cut -d' ' -f8
</code></pre>

A less reliable way: (see comment below)

<pre><code>hostname -I | cut -d' ' -f1
</code></pre>

blocks|key|221224|text|对于linux计算机(不是OS+X)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|221225|hostname+--ip-address|code-block|syntax|javascript|221226|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For linux machines (not OS X) :

<pre><code>hostname --ip-address
</code></pre>

blocks|key|439505|text|特定于特定版本的Ubuntu。尽管它可能只会告诉你127.0.0.1|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|439506|hostname++-i|code-block|syntax|javascript|439507|或|439508|hostname+-I|439509|entityMap^0|P|9|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

Specific to only certain builds of Ubuntu. Though it may just tell you <code>127.0.0.1</code>:

<pre><code>hostname -i
</code></pre>

or

<pre><code>hostname -I
</code></pre>

blocks|key|221313|text|您还可以在linux中使用以下命令获取eth0的IP版本4地址|type|unstyled|depth|inlineStyleRanges|entityRanges|data|221314|/sbin/ip+-4+-o+addr+show+dev+eth0%7C+awk+'{split($4,a,"/");print+a[1]}'|code-block|syntax|javascript|221315|输出将如下所示|221316|[root@localhost+Sathish]#+/sbin/ip+-4+-o+addr+show+dev+eth0%7C+awk+'{split($4,a,"/");print+a[1]}'
192.168.1.22|221317|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can also get IP version 4 address of eth0 by using this command in linux

<pre><code>/sbin/ip -4 -o addr show dev eth0| awk '{split($4,a,"/");print a[1]}'
</code></pre>

Output will be like this

<pre><code>[root@localhost Sathish]# /sbin/ip -4 -o addr show dev eth0| awk '{split($4,a,"/");print a[1]}'
192.168.1.22
</code></pre>

blocks|key|439926|text|这可以在Linux和OSX上运行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|439927|这将获取与默认路由相关联的接口|439928|NET_IF=`netstat+-rn+%7C+awk+'/%5E0.0.0.0/+{thif=substr($0,74,10);+print+thif;}+/%5Edefault.*UG/+{thif=substr($0,65,10);+print+thif;}'`|code-block|syntax|javascript|439929|使用上面发现的接口获取ip地址。|439930|NET_IP=`ifconfig+${NET_IF}+%7C+grep+-Eo+'inet+(addr:)?([0-9]*\.){3}[0-9]*'+%7C+grep+-Eo+'([0-9]*\.){3}[0-9]*'+%7C+grep+-v+'127.0.0.1'`|439931|OSX|439932|uname+-a|439933|达尔文笔记本电脑14.4.0达尔文内核版本14.4.0:清华5月28日11:35:04+PDT+2015；根目录:xnu-2782.30.5~1/RELEASE_+x86_64+x86_64|439934|echo+$NET_IF|439935|en5|439936|echo+$NET_IP|439937|192.168.0.130|439938|CentOS+Linux|439939|uname+-a|439940|Linux+dev-cil.medfx.local+2.6.18-164.el5xen+1+SMP清华Sep+3+04:03:03+EDT+2009+x86_64+GNU/Linux|439941|echo+$NET_IF|439942|eth0|439943|echo+$NET_IP|439944|192.168.46.10|439945|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1H|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1I|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|1J|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|1K|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|1L|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|1M|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|1N|8|@]|9|@]|A|$]]|$1|S|3|T|5|F|7|1O|8|@]|9|@]|A|$G|H]]|$1|U|3|V|5|6|7|1P|8|@]|9|@]|A|$]]|$1|W|3|X|5|F|7|1Q|8|@]|9|@]|A|$G|H]]|$1|Y|3|Z|5|6|7|1R|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|1S|8|@]|9|@]|A|$]]|$1|12|3|13|5|F|7|1T|8|@]|9|@]|A|$G|H]]|$1|14|3|15|5|6|7|1U|8|@]|9|@]|A|$]]|$1|16|3|17|5|F|7|1V|8|@]|9|@]|A|$G|H]]|$1|18|3|19|5|6|7|1W|8|@]|9|@]|A|$]]|$1|1A|3|1B|5|F|7|1X|8|@]|9|@]|A|$G|H]]|$1|1C|3|1D|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|1E|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]]|1F|$]]

<h1>This works on Linux and OSX</h1>

This will get the interface associated to the default route

<pre><code>NET_IF=`netstat -rn | awk '/^0.0.0.0/ {thif=substr($0,74,10); print thif;} /^default.*UG/ {thif=substr($0,65,10); print thif;}'`
</code></pre>

Using the interface discovered above, get the ip address.

<pre><code>NET_IP=`ifconfig ${NET_IF} | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'`
</code></pre>

<h2>OSX</h2>

<pre><code>uname -a
</code></pre>

Darwin laptop 14.4.0 Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64 x86_64

<pre><code>echo $NET_IF
</code></pre>

en5 

<pre><code>echo $NET_IP
</code></pre>

192.168.0.130

<h2>CentOS Linux</h2>

<pre><code>uname -a
</code></pre>

Linux dev-cil.medfx.local 2.6.18-164.el5xen 1 SMP Thu Sep 3 04:03:03 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

<pre><code>echo $NET_IF
</code></pre>

eth0

<pre><code>echo $NET_IP
</code></pre>

192.168.46.10

blocks|key|221864|text|使用其他一些方法时，您可能会遇到系统上定义了多个IP地址的冲突。默认情况下，此行始终获取使用的IP地址。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|221865|ip+route+get+8.8.8.8+%7C+head+-1+%7C+awk+'{print+$7}'|code-block|syntax|javascript|221866|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Using some of the other methods You may enter a conflict where multiple IP adresses is defined on the system.
This line always gets the IP address by default used.

<pre><code>ip route get 8.8.8.8 | head -1 | awk '{print $7}'
</code></pre>

blocks|key|440675|text|ifconfig+%7C+grep+'inet+'+%7C+grep+-v+'127.0.0.1'+%7C+awk+'{print+$2}'|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|440676|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>ifconfig | grep 'inet ' | grep -v '127.0.0.1' | awk '{print $2}'
</code></pre>

blocks|key|440712|text|我正在提取我对这个答案的评论：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|440713|ip+route+get+1+%7C+sed+-n+'s/%5E.*src+$[0-9.]*$+.*$/\1/p'|code-block|syntax|javascript|440714|它基于@CollinAnderson的回答，这在我的情况下不起作用。|440715|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Im extracting my comment to this answer:

<pre><code>ip route get 1 | sed -n 's/^.*src $[0-9.]*$ .*$/\1/p'
</code></pre>

It bases on @CollinAnderson answer which didn't work in my case.

blocks|key|440750|text|在作为默认网关的网络中查找此计算机的IP地址(例如，排除所有虚拟网络、坞站网桥)。互联网网关、wifi网关、以太网|type|unstyled|depth|inlineStyleRanges|entityRanges|data|440751|ip+route%7C+grep+$(ip+route+%7Cgrep+default+%7C+awk+'{+print+$5+}')+%7C+grep+-v+"default"+%7C+awk+'/scope/+{+print+$9+}'|code-block|syntax|javascript|440752|在Linux上工作。|440753|测试：|440754|➜++~+ip+route%7C+grep+$(ip+route+%7Cgrep+default+%7C+awk+'{+print+$5+}')+%7C+grep+-v+"default"+%7C+awk+'/scope/+{+print+$9+}'
192.168.0.114

➜++reverse-networking+git:(feature/type-local)+✗+ifconfig+wlp2s0
wlp2s0:+flags=4163<UP,BROADCAST,RUNNING,MULTICAST>++mtu+1500
++++++++inet+192.168.0.114++netmask+255.255.255.0++broadcast+192.168.0.255
++++++++inet6+fe80::d3b9:8e6e:caee:444++prefixlen+64++scopeid+0x20<link>
++++++++ether+ac:x:y:z++txqueuelen+1000++(Ethernet)
++++++++RX+packets+25883684++bytes+27620415278+(25.7+GiB)
++++++++RX+errors+0++dropped+27++overruns+0++frame+0
++++++++TX+packets+7511319++bytes+1077539831+(1.0+GiB)
++++++++TX+errors+0++dropped+0+overruns+0++carrier+0++collisions+0|440755|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Finds an IP address of this computer in a network which is a default gateway (for example excludes all virtual networks, docker bridges) eg. internet gateway, wifi gateway, ethernet 

<pre class="lang-sh prettyprint-override"><code>ip route| grep $(ip route |grep default | awk '{ print $5 }') | grep -v "default" | awk '/scope/ { print $9 }'
</code></pre>

Works on Linux.

Test:

<pre><code>➜ ~ ip route| grep $(ip route |grep default | awk '{ print $5 }') | grep -v "default" | awk '/scope/ { print $9 }'
192.168.0.114

➜ reverse-networking git:(feature/type-local) ✗ ifconfig wlp2s0
wlp2s0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt; mtu 1500
 inet 192.168.0.114 netmask 255.255.255.0 broadcast 192.168.0.255
 inet6 fe80::d3b9:8e6e:caee:444 prefixlen 64 scopeid 0x20&lt;link&gt;
 ether ac:x:y:z txqueuelen 1000 (Ethernet)
 RX packets 25883684 bytes 27620415278 (25.7 GiB)
 RX errors 0 dropped 27 overruns 0 frame 0
 TX packets 7511319 bytes 1077539831 (1.0 GiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
</code></pre>

blocks|key|439626|text|在linux系统上获取本地IPv4地址的最短方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|439627|hostname+-I+%7C+awk+'{print+$1}'|code-block|syntax|javascript|439628|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The shortest way to get your local ipv4-address on your linux system:

<pre><code>hostname -I | awk '{print $1}'
</code></pre>

blocks|key|440597|text|我不得不在Collin+Anderson的回答中补充说，如果你有两个接口，并且它们都显示为up，那么这个方法也会考虑到。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|440598|ip+route+get+1+%7C+awk+'{print+$NF;exit}'|code-block|syntax|javascript|440599|我一直在使用Raspberry+Pi's开发一个应用程序，需要实际使用的IP地址，而不仅仅是它是否正常运行。大多数其他答案将返回这两个IP地址，这不一定有帮助-无论如何，对于我的方案。|440600|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I have to add to Collin Andersons answer that this method also takes into account if you have two interfaces and they're both showing as up.

<pre><code>ip route get 1 | awk '{print $NF;exit}'
</code></pre>

I have been working on an application with Raspberry Pi's and needed the IP address that was actually being used not just whether it was up or not. Most of the other answers will return both IP address which isn't necessarily helpful - for my scenario anyway.

blocks|key|221538|text|主网络接口IP|type|unstyled|depth|inlineStyleRanges|entityRanges|data|221539|ifconfig+`ip+route+%7C+grep+default+%7C+head+-1+%7C+sed+'s/$.*dev+$$[a-z0-9]*$$.*$/\2/g'`+%7C+grep+-oE+"\b([0-9]{1,3}\.){3}[0-9]{1,3}\b"+%7C+head+-1|code-block|syntax|javascript|221540|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Primary network interface IP

<pre><code>ifconfig `ip route | grep default | head -1 | sed 's/$.*dev $$[a-z0-9]*$$.*$/\2/g'` | grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b" | head -1
</code></pre>

blocks|key|221277|text|ip+addr+show+%7C+grep+-E+'%5E\s*inet'+%7C+grep+-m1+global+%7C+awk+'{+print+$2+}'+%7C+sed+'s%7C/.*%7C%7C'|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|221278|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>ip addr show | grep -E '^\s*inet' | grep -m1 global | awk '{ print $2 }' | sed 's|/.*||'
</code></pre>

blocks|key|221730|text|另一个同时在Linux和OSX上工作的ifconfig变体：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|221731|ifconfig+%7C+grep+"inet+"+%7C+cut+-f2+-d'+'|code-block|syntax|javascript|221732|entityMap^0|J|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Another <code>ifconfig</code> variantion that works both on Linux and OSX:

<pre class="lang-bash prettyprint-override"><code>ifconfig | grep "inet " | cut -f2 -d' '
</code></pre>

blocks|key|440372|text|我经历了许多链接(StackExchange、AskUbuntu、StackOverflow等)，最终决定将所有最好的解决方案组合到一个shell脚本中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|440373|在我看来，这两个QA是最好的：|440374|如何在shell脚本中获取外部IP地址？https://unix.stackexchange.com/q/22615|offset|length|440375|如何找到我的内部ip地址？https://askubuntu.com/a/604691|440376|这是我的解决方案，基于rsp在他的存储库(https://github.com/rsp/scripts/)中分享的一些想法。|440377|你们中的一些人可能会说这个脚本对于这么简单的任务来说是非常庞大的，但我想让它在用法上尽可能地简单和灵活。它支持简单的配置文件，允许重新定义默认值。|440378|它已在Cygwin、MINGW和Linux+(Red+Hat)下成功测试。|440379|显示内部IP地址|440380|myip+-i|code-block|syntax|javascript|440381|显示外部IP地址|440382|myip+-e|440383|源代码，也可以通过链接获得：https://github.com/ildar-shaimordanov/tea-set/blob/master/home/bin/myip。配置文件的示例在主脚本旁边。|440384|#!/bin/bash

#+=========================================================================
#
#+Getting+both+internal+and+external+IP+addresses+used+for+outgoing+
#+Internet+connections.
#
#+Internal+IP+address+is+the+IP+address+of+your+computer+network+interface+
#+that+would+be+used+to+connect+to+Internet.
#
#+External+IP+address+is+the+IP+address+that+is+visible+by+external+
#+servers+that+you+connect+to+over+Internet.
#
#+Copyright+(C)+2016+Ildar+Shaimordanov
#
#+=========================================================================

#+Details+of+the+actual+implementation+are+based+on+the+following+QA:
#
#+How+can+I+get+my+external+IP+address+in+a+shell+script?
#+https://unix.stackexchange.com/q/22615
#
#+How+do+I+find+my+internal+ip+address?
#+https://askubuntu.com/a/604691

#+=========================================================================

for+f+in+\
++++"$(+dirname+"$0"+)/myip.conf"+\
++++~/.myip.conf+\
++++/etc/myip.conf
do
++++[+-f+"$f"+]+&&+{
++++++++.+"$f"
++++++++break
++++}
done

#+=========================================================================

show_usage()+{
++++cat+-+<<HELP
USAGE
++$(+basename+"$0"+)+[OPTIONS]

DESCRIPTION
++Display+the+internal+and+external+IP+addresses

OPTIONS
++-i++Display+the+internal+IP+address
++-e++Display+the+external+IP+address
++-v++Turn+on+verbosity
++-h++Print+this+help+and+exit
HELP
++++exit
}

die()+{
++++echo+"$(+basename+"$0"+):+$@"+>&2
++++exit+2
}

#+=========================================================================

show_internal=""
show_external=""
show_verbose=""

while+getopts+":ievh"+opt
do
++++case+"$opt"+in
++++i+)
++++++++show_internal=1
++++++++;;
++++e+)
++++++++show_external=1
++++++++;;
++++v+)
++++++++show_verbose=1
++++++++;;
++++h+)
++++++++show_usage
++++++++;;
++++\?+)
++++++++die+"Illegal+option:+$OPTARG"
++++++++;;
++++esac
done

if+[+-z+"$show_internal"+-a+-z+"$show_external"+]
then
++++show_internal=1
++++show_external=1
fi

#+=========================================================================

#+Use+Google's+public+DNS+to+resolve+the+internal+IP+address
[+-n+"$TARGETADDR"+]+%7C%7C+TARGETADDR="8.8.8.8"

#+Query+the+specific+URL+to+resolve+the+external+IP+address
[+-n+"$IPURL"+]+%7C%7C+IPURL="ipecho.net/plain"

#+Define+explicitly+$IPCMD+to+gather+$IPURL+using+another+tool
[+-n+"$IPCMD"+]+%7C%7C+{
++++if+++which+curl+>/dev/null+2>&1
++++then
++++++++IPCMD="curl+-s"
++++elif+which+wget+>/dev/null+2>&1
++++then
++++++++IPCMD="wget+-qO+-"
++++else
++++++++die+"Neither+curl+nor+wget+installed"
++++fi
}

#+=========================================================================

resolveip()+{
++++{
++++++++gethostip+-d+"$1"+&&+return
++++++++getent+ahostsv4+"$1"+\
++++++++%7C+grep+RAW+\
++++++++%7C+awk+'{+print+$1;+exit+}'+
++++}+2>/dev/null
}

internalip()+{
++++[+-n+"$show_verbose"+]+&&+printf+"Internal:+"

++++case+"$(+uname+%7C+tr+'[:upper:]'+'[:lower:]'+)"+in
++++cygwin*+%7C+mingw*+%7C+msys*+)
++++++++netstat+-rn+\
++++++++%7C+grep+-w+'0.0.0.0'+\
++++++++%7C+awk+'{+print+$4+}'
++++++++return
++++++++;;
++++esac

++++local+t="$(+resolveip+"$TARGETADDR"+)"
++++[+-n+"$t"+]+%7C%7C+die+"Cannot+resolve+$TARGETADDR"
++++ip+route+get+"$t"+\
++++%7C+awk+'{+print+$NF;+exit+}'
}

externalip()+{
++++[+-n+"$show_verbose"+]+&&+printf+"External:+"

++++eval+$IPCMD+"$IPURL"+$IPOPEN
}

#+=========================================================================

[+-n+"$show_internal"+]+&&+internalip
[+-n+"$show_external"+]+&&+externalip

#+=========================================================================

#+EOF|440385|entityMap|0|LINK|mutability|MUTABLE|url|https://unix.stackexchange.com/q/22615|1|https://askubuntu.com/a/604691|2|https://github.com/rsp/scripts/|3|https://github.com/ildar-shaimordanov/tea-set/blob/master/home/bin/myip^0|0|0|K|12|0|0|D|U|1|0|L|V|2|0|0|0|0|0|0|0|E|1Z|3|0|0^^$0|@$1|2|3|4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1J|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1K|8|@]|9|@$F|1L|G|1M|1|1N]]|A|$]]|$1|H|3|I|5|6|7|1O|8|@]|9|@$F|1P|G|1Q|1|1R]]|A|$]]|$1|J|3|K|5|6|7|1S|8|@]|9|@$F|1T|G|1U|1|1V]]|A|$]]|$1|L|3|M|5|6|7|1W|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1X|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|R|3|S|5|T|7|1Z|8|@]|9|@]|A|$U|V]]|$1|W|3|X|5|6|7|20|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|T|7|21|8|@]|9|@]|A|$U|V]]|$1|10|3|11|5|6|7|22|8|@]|9|@$F|23|G|24|1|25]]|A|$]]|$1|12|3|13|5|T|7|26|8|@]|9|@]|A|$U|V]]|$1|14|3|-4|5|6|7|27|8|@]|9|@]|A|$]]]|15|$16|$5|17|18|19|A|$1A|1B]]|1C|$5|17|18|19|A|$1A|1D]]|1E|$5|17|18|19|A|$1A|1F]]|1G|$5|17|18|19|A|$1A|1H]]]]

I went through a lot of links (StackExchange, AskUbuntu, StackOverflow etc) and came to the decision to combine all the best solutions into one shell script. 

In my opinion these two QAs are the best of seen:

How can I get my external IP address in a shell script?
<a href="https://unix.stackexchange.com/q/22615">https://unix.stackexchange.com/q/22615</a>

How do I find my internal ip address?
<a href="https://askubuntu.com/a/604691">https://askubuntu.com/a/604691</a>

Here is my solution based on some ideas by rsp shared in his repository (<a href="https://github.com/rsp/scripts/" rel="nofollow noreferrer">https://github.com/rsp/scripts/</a>). 

Some of you could say that this script is extremely huge for so simple task but I'd like to make it easy and flexible in usage as much as possible. It supports simple configuration file allowing redefine the default values.

It was successfully tested under Cygwin, MINGW and Linux (Red Hat).

Show internal IP address

<pre><code>myip -i
</code></pre>

Show external IP address

<pre><code>myip -e
</code></pre>

Source code, also available by the link: <a href="https://github.com/ildar-shaimordanov/tea-set/blob/master/home/bin/myip" rel="nofollow noreferrer">https://github.com/ildar-shaimordanov/tea-set/blob/master/home/bin/myip</a>. Example of configuration file is there, next to the main script. 

<pre><code>#!/bin/bash

# =========================================================================
#
# Getting both internal and external IP addresses used for outgoing 
# Internet connections.
#
# Internal IP address is the IP address of your computer network interface 
# that would be used to connect to Internet.
#
# External IP address is the IP address that is visible by external 
# servers that you connect to over Internet.
#
# Copyright (C) 2016 Ildar Shaimordanov
#
# =========================================================================

# Details of the actual implementation are based on the following QA:
#
# How can I get my external IP address in a shell script?
# https://unix.stackexchange.com/q/22615
#
# How do I find my internal ip address?
# https://askubuntu.com/a/604691

# =========================================================================

for f in \
 "$( dirname "$0" )/myip.conf" \
 ~/.myip.conf \
 /etc/myip.conf
do
 [ -f "$f" ] &amp;&amp; {
 . "$f"
 break
 }
done

# =========================================================================

show_usage() {
 cat - &lt;&lt;HELP
USAGE
 $( basename "$0" ) [OPTIONS]

DESCRIPTION
 Display the internal and external IP addresses

OPTIONS
 -i Display the internal IP address
 -e Display the external IP address
 -v Turn on verbosity
 -h Print this help and exit
HELP
 exit
}

die() {
 echo "$( basename "$0" ): $@" &gt;&amp;2
 exit 2
}

# =========================================================================

show_internal=""
show_external=""
show_verbose=""

while getopts ":ievh" opt
do
 case "$opt" in
 i )
 show_internal=1
 ;;
 e )
 show_external=1
 ;;
 v )
 show_verbose=1
 ;;
 h )
 show_usage
 ;;
 \? )
 die "Illegal option: $OPTARG"
 ;;
 esac
done

if [ -z "$show_internal" -a -z "$show_external" ]
then
 show_internal=1
 show_external=1
fi

# =========================================================================

# Use Google's public DNS to resolve the internal IP address
[ -n "$TARGETADDR" ] || TARGETADDR="8.8.8.8"

# Query the specific URL to resolve the external IP address
[ -n "$IPURL" ] || IPURL="ipecho.net/plain"

# Define explicitly $IPCMD to gather $IPURL using another tool
[ -n "$IPCMD" ] || {
 if which curl &gt;/dev/null 2&gt;&amp;1
 then
 IPCMD="curl -s"
 elif which wget &gt;/dev/null 2&gt;&amp;1
 then
 IPCMD="wget -qO -"
 else
 die "Neither curl nor wget installed"
 fi
}

# =========================================================================

resolveip() {
 {
 gethostip -d "$1" &amp;&amp; return
 getent ahostsv4 "$1" \
 | grep RAW \
 | awk '{ print $1; exit }' 
 } 2&gt;/dev/null
}

internalip() {
 [ -n "$show_verbose" ] &amp;&amp; printf "Internal: "

 case "$( uname | tr '[:upper:]' '[:lower:]' )" in
 cygwin* | mingw* | msys* )
 netstat -rn \
 | grep -w '0.0.0.0' \
 | awk '{ print $4 }'
 return
 ;;
 esac

 local t="$( resolveip "$TARGETADDR" )"
 [ -n "$t" ] || die "Cannot resolve $TARGETADDR"
 ip route get "$t" \
 | awk '{ print $NF; exit }'
}

externalip() {
 [ -n "$show_verbose" ] &amp;&amp; printf "External: "

 eval $IPCMD "$IPURL" $IPOPEN
}

# =========================================================================

[ -n "$show_internal" ] &amp;&amp; internalip
[ -n "$show_external" ] &amp;&amp; externalip

# =========================================================================

# EOF
</code></pre>

blocks|key|439437|text|不确定这是否适用于所有操作系统，请尝试一下。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|439438|ifconfig+%7C+awk+-F"[+:]%2B"+'/inet+addr/+&&+!/127.0/+{print+$4}'|code-block|syntax|javascript|439439|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Not sure if this works in all os, try it out.

<pre><code>ifconfig | awk -F"[ :]+" '/inet addr/ &amp;&amp; !/127.0/ {print $4}'
</code></pre>

blocks|key|221230|text|ifconfig+%7C+grep+"inet+addr:"+%7C+grep+-v+"127.0.0.1"+%7C+grep+-Eo+'[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'++%7C+head+-1|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|221231|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>ifconfig | grep "inet addr:" | grep -v "127.0.0.1" | grep -Eo '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1
</code></pre>

blocks|key|221495|text|如果您知道网络接口(eth0、无线局域网、tun0等)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|221496|ifconfig+eth0+%7C+grep+addr:+%7C+awk+'{+print+$2+}'+%7C+cut+-d:+-f2|code-block|syntax|javascript|221497|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you know the network interface (eth0, wlan, tun0 etc):

<pre><code>ifconfig eth0 | grep addr: | awk '{ print $2 }' | cut -d: -f2
</code></pre>

blocks|key|440032|text|ifconfig+$(netstat+-rn+%7C+grep+-E+"%5Edefault%7C%5E0.0.0.0"+%7C+head+-1+%7C+awk+'{print+$NF}')+%7C+grep+'inet+'+%7C+awk+'{print+$2}'+%7C+grep+-Eo+'([0-9]*\.){3}[0-9]*'+|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|440033|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>ifconfig $(netstat -rn | grep -E "^default|^0.0.0.0" | head -1 | awk '{print $NF}') | grep 'inet ' | awk '{print $2}' | grep -Eo '([0-9]*\.){3}[0-9]*' 
</code></pre>

blocks|key|440487|text|适用于Mac、Linux和Docker容器：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|440488|退出$1；$+hostname+--ip-address+2>+/dev/null+%7C%7C+(ifconfig+%7C+sed+-En+'s/127.0.0.1//;s/.*inet+(addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'+%7C+awk+'{print}‘)|offset|length|style|CODE|440489|还可以在Makefile上工作，如：|440490|LOCAL_HOST+:=+${shell+hostname+--ip-address+2>+/dev/null+%7C%7C+(ifconfig+%7C+sed+-En+'s/127.0.0.1//;s/.*inet+(addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'+%7C+awk+'{print+$1;+exit}')}|440491|entityMap^0|0|5|3R|0|4|8|0|0|4O|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@$D|V|E|W|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|M|$]]

Works on Mac, Linux and inside Docker Containers:

<code>$ hostname --ip-address 2&gt; /dev/null || (ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p' | awk '{print</code>$1; exit}')

Also works on <code>Makefile</code> as:

<code>LOCAL_HOST := ${shell hostname --ip-address 2&gt; /dev/null || (ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p' | awk '{print $1; exit}')}</code>

blocks|key|440513|text|对于linux，您需要的是以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|440514|ifconfig+$1%7Csed+-n+2p%7Cawk+'{+print+$2+}'%7Cawk+-F+:+'{+print+$2+}'|code-block|syntax|javascript|440515|在您的shell中键入此命令，您将简单地知道您的ip地址。|440516|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

For linux, what you need is this command:

<pre><code>ifconfig $1|sed -n 2p|awk '{ print $2 }'|awk -F : '{ print $2 }'
</code></pre>

type this in your shell and you will simply know your ip.

blocks|key|440526|text|这个更容易阅读：ifconfig+%7C+grep+'inet+addr:'+%7C/usr/bin/awk+'{print+$2}'+%7C+tr+-d+addr:|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|440527|entityMap^0|8|1X|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

This is easier to read: 
<code>ifconfig | grep 'inet addr:' |/usr/bin/awk '{print $2}' | tr -d addr:</code>

blocks|key|221957|text|如果您安装了npm和node：npm+install+-g+ip+&&+node+-e+"const+ip+=+require('ip');+console.log(ip.address())"|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|221958|entityMap^0|6|3|A|4|F|2A|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

If you have <code>npm</code> and <code>node</code> installed : <code>npm install -g ip &amp;&amp; node -e "const ip = require('ip'); console.log(ip.address())"</code>

blocks|key|222061|text|有一个适用于所有内容的节点包。它是跨平台的，并且易于使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|222062|$+npm+install+--global+internal-ip-cli

$+internal-ip
fe80::1

$+internal-ip+--ipv4
192.168.0.3|code-block|syntax|javascript|222063|这是一种有争议的方法，但是使用npm作为工具正变得越来越流行，不管你喜欢与否。|222064|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

There's a node package for everything. It's cross-platform and easy to use.

<pre><code>$ npm install --global internal-ip-cli

$ internal-ip
fe80::1

$ internal-ip --ipv4
192.168.0.3
</code></pre>

This is a controversial approach, but using npm for tooling is becoming more popular, like it or not.

blocks|key|439662|text|在Mac上，请考虑以下事项：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|439663|scutil+--nwi+%7C+grep+-Eo+'[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'|code-block|syntax|javascript|439664|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

On a Mac, consider the following:

<pre><code>scutil --nwi | grep -Eo '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
</code></pre>

I am looking for a command line solution that would return me the primary (first) IP address of the localhost, other than 127.0.0.1

The solution should work at least for Linux (Debian and RedHat) and OS X 10.7+

I am aware that <code>ifconfig</code> is available on both but its output is not so consistent between these platforms.

How to get the primary IP address of the local machine on Linux and OS X?

容器

路由

CentOS

Ubuntu

Debian

Linux

我正在寻找一个命令行解决方案，它可以返回本地主机的主要(第一个) IP地址，而不是127.0.0.1该解决方案应该至少适用于Linux (Debian和RedHat)和OS X 10.7+我知道ifconfig在这两个平台上都是可用的，但它的输出在这两个平台上并不是那么一致。

问如何获取Linux和OS X上本地机器的主IP地址？
EN

回答 25

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问如何获取Linux和OS X上本地机器的主IP地址？EN

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