blocks|key|487837|text|您可以编写一个只返回IP的脚本，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|487838|/sbin/ifconfig+eth0+%7C+grep+'inet+addr'+%7C+cut+-d:+-f2+%7C+awk+'{print+$1}'|code-block|syntax|javascript|487839|对于MAC：|487840|ifconfig+%7C+grep+"inet+"+%7C+grep+-v+127.0.0.1+%7C+cut+-d\++-f2|487841|或用于linux系统|487842|hostname+-i+%7C+awk+'{print+$3}'+#+Ubuntu+

hostname+-i+#+Debian|487843|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

You can write a script that only return the IP like:

<pre><code>/sbin/ifconfig eth0 | grep 'inet addr' | cut -d: -f2 | awk '{print $1}'
</code></pre>

For MAC:

<pre><code>ifconfig | grep "inet " | grep -v 127.0.0.1 | cut -d\ -f2
</code></pre>

Or for linux system

<pre><code>hostname -i | awk '{print $3}' # Ubuntu 

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

blocks|key|487993|text|这将为您提供所有IPv4接口，包括环回127.0.0.1：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|487994|ip+-4+addr+%7C+grep+-oP+'(?<=inet\s)\d%2B(\.\d%2B){3}'|code-block|syntax|javascript|487995|这将仅显示eth0|offset|length|style|CODE|487996|ip+-4+addr+show+eth0+%7C+grep+-oP+'(?<=inet\s)\d%2B(\.\d%2B){3}'|487997|这样你就可以获得IPv6地址了：|487998|ip+-6+addr+%7C+grep+-oP+'(?<=inet6\s)[\da-f:]%2B'|487999|仅限eth0+IPv6：|488000|ip+-6+addr+show+eth0+%7C+grep+-oP+'(?<=inet6\s)[\da-f:]%2B'|488001|entityMap^0|0|0|5|4|0|0|0|0|2|4|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@$I|11|J|12|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|16|8|@$I|17|J|18|K|L]]|9|@]|A|$]]|$1|U|3|V|5|D|7|19|8|@]|9|@]|A|$E|F]]|$1|W|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|X|$]]

This will give you all IPv4 interfaces, including the loopback 127.0.0.1:

<pre><code>ip -4 addr | grep -oP '(?&lt;=inet\s)\d+(\.\d+){3}'
</code></pre>

This will only show <code>eth0</code>:

<pre><code>ip -4 addr show eth0 | grep -oP '(?&lt;=inet\s)\d+(\.\d+){3}'
</code></pre>

And this way you can get IPv6 addresses:

<pre><code>ip -6 addr | grep -oP '(?&lt;=inet6\s)[\da-f:]+'
</code></pre>

Only <code>eth0</code> IPv6:

<pre><code>ip -6 addr show eth0 | grep -oP '(?&lt;=inet6\s)[\da-f:]+'
</code></pre>

blocks|key|703868|text|如果您的环境有限，则可以使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|703869|ip+-4+addr+show+dev+eth0+%7C+grep+inet+%7C+tr+-s+"+"+%7C+cut+-d"+"+-f3+%7C+head+-n+1|code-block|syntax|javascript|703870|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 have limited environment, you may use this command:

<pre><code>ip -4 addr show dev eth0 | grep inet | tr -s " " | cut -d" " -f3 | head -n 1
</code></pre>

blocks|key|703748|text|我们可以简单地使用两个命令(+ifconfig+%2B+awk+)来获得我们想要的IP+(v4)，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|703749|在Linux上，假设从eth0接口获取IP地址，执行以下命令：|offset|length|style|CODE|703750|/sbin/ifconfig+eth0+%7C+awk+'/inet+addr/{print+substr($2,6)}'|code-block|syntax|javascript|703751|在OSX上，假设从en0接口获取IP地址，请运行以下命令：|703752|/sbin/ifconfig+en0+%7C+awk+'/inet+/{print+$2}'|703753|要了解我们的公网/外部IP，请在~/.bashrc中添加此函数|703754|whatismyip+()+{
++++curl+-s+"http://api.duckduckgo.com/?q=ip&format=json"+%7C+jq+'.Answer'+%7C+grep+--color=auto+-oE+"\b([0-9]{1,3}\.){3}[0-9]{1,3}\b"
}|703755|那就跑吧，whatismyip|703756|entityMap^0|0|B|4|0|0|9|3|0|0|G|9|0|0|5|A|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@$D|10|E|11|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|12|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|13|8|@$D|14|E|15|F|G]]|9|@]|A|$]]|$1|O|3|P|5|J|7|16|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|17|8|@$D|18|E|19|F|G]]|9|@]|A|$]]|$1|S|3|T|5|J|7|1A|8|@]|9|@]|A|$K|L]]|$1|U|3|V|5|6|7|1B|8|@$D|1C|E|1D|F|G]]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|X|$]]

We can simply use only 2 commands ( ifconfig + awk ) to get just the IP (v4) we want like so:

On Linux, assuming to get IP address from <code>eth0</code> interface, run the following command:

<pre><code>/sbin/ifconfig eth0 | awk '/inet addr/{print substr($2,6)}'
</code></pre>

On OSX, assumming to get IP adddress from <code>en0</code> interface, run the following command:

<pre><code>/sbin/ifconfig en0 | awk '/inet /{print $2}'
</code></pre>

To know our public/external IP, add this function in <code>~/.bashrc</code>

<pre><code>whatismyip () {
 curl -s "http://api.duckduckgo.com/?q=ip&amp;format=json" | jq '.Answer' | grep --color=auto -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b"
}
</code></pre>

Then run, <code>whatismyip</code>

blocks|key|488246|text|命令ifconfig已弃用，您应该在Linux上使用ip命令。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|488247|此外，ip+a将为您提供与IP相同的作用域，因此更易于使用。|488248|此命令将显示您的全局(外部)+IP：|488249|ip+a+%7C+grep+"scope+global"+%7C+grep+-Po+'(?<=inet+)[\d.]%2B'|code-block|syntax|javascript|488250|所有IPv4+(也包括127.0.0.1)：|488251|ip+a+%7C+grep+"scope"+%7C+grep+-Po+'(?<=inet+)[\d.]%2B'|488252|所有IPv6+(也::1)：|488253|ip+a+%7C+grep+"scope"+%7C+grep+-Po+'(?<=inet6+)[\da-z:]%2B'|488254|entityMap^0|2|8|Q|2|0|3|4|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|16|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|17|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|18|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|19|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|1A|8|@]|D|@]|E|$]]|$1|U|3|V|5|L|7|1B|8|@]|D|@]|E|$M|N]]|$1|W|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|X|$]]

Command <code>ifconfig</code> is deprected and you should use <code>ip</code> command on Linux.

Also <code>ip a</code> will give you scope on the same line as IP so it's easier to use.

This command will show you your global (external) IP:

<pre><code>ip a | grep "scope global" | grep -Po '(?&lt;=inet )[\d.]+'
</code></pre>

All IPv4 (also 127.0.0.1):

<pre><code>ip a | grep "scope" | grep -Po '(?&lt;=inet )[\d.]+'
</code></pre>

All IPv6 (also ::1):

<pre><code>ip a | grep "scope" | grep -Po '(?&lt;=inet6 )[\da-z:]+'
</code></pre>

blocks|key|704077|text|要仅打印eth0的IP地址，而不打印其他文本，请执行以下操作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|704078|ifconfig+eth0+%7C+grep+-Po+'(?<=inet+addr:)[\d.]%2B'|code-block|syntax|javascript|704079|要确定您的主接口(因为它可能不是"eth0")，请使用：|704080|route+%7C+grep+%5Edefault+%7C+sed+"s/.*+//"|704081|以上两行可以合并为一个命令，如下所示：|704082|ifconfig+`route+%7C+grep+%5Edefault+%7C+sed+"s/.*+//"`+\
++%7C+grep+-Po+'(?<=inet+addr:)[\d.]%2B'|704083|entityMap^0|4|4|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|T|$]]

To print only the IP address of <code>eth0</code>, without other text:
<pre><code>ifconfig eth0 | grep -Po '(?&lt;=inet addr:)[\d.]+'
</code></pre>
To determine your primary interface (because it might not be &quot;eth0&quot;), use:
<pre><code>route | grep ^default | sed &quot;s/.* //&quot;
</code></pre>
The above two lines can be combined into a single command like this:
<pre><code>ifconfig `route | grep ^default | sed &quot;s/.* //&quot;` \
 | grep -Po '(?&lt;=inet addr:)[\d.]+'
</code></pre>

blocks|key|703702|text|我总是在最意想不到的时候需要它，并且没有失败，最终像这样搜索线程。因此，我编写了一个简单的脚本来通过netstat获取IPv4地址，名为echoip+-+you+can+find+it+here。网络地址的bash如下所示，它还从ipecho.net获取您的公共地址：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|703703|IPV4='\d%2B(\.\d%2B){3}'
INTERFACES=`netstat+-i+%7C+grep+-E+"$IPV4"+%7C+cut+-d+'+'+-f+1`
INTERFACE_IPS=`netstat+-i+%7C+grep+-oE+"$IPV4"`

for+i+in+"${!INTERFACES[@]}";+do
++printf+"%25s:\t%25s\n"+"${INTERFACES[$i]}"+"${INTERFACE_IPS[$i]}"
done|code-block|syntax|javascript|703704|echoip脚本生成如下所示的输出：|703705|$+echoip
public:+26.106.59.169
en0:++++10.1.10.2|703706|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/stites/echoip^0|1W|6|25|K|0|0|0|0|6|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|F|3|G|5|H|7|12|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

I always wind up needing this at the most unexpected times and, without fail, wind up searching for threads like this on SO. So I wrote a simple script to get IPv4 addresses via netstat, called <code>echoip</code> - <a href="https://github.com/stites/echoip" rel="nofollow">you can find it here</a>. The bash for network addresses looks like this, it also gets your public address from ipecho.net:

<pre><code>IPV4='\d+(\.\d+){3}'
INTERFACES=`netstat -i | grep -E "$IPV4" | cut -d ' ' -f 1`
INTERFACE_IPS=`netstat -i | grep -oE "$IPV4"`

for i in "${!INTERFACES[@]}"; do
 printf "%s:\t%s\n" "${INTERFACES[$i]}" "${INTERFACE_IPS[$i]}"
done
</code></pre>

The <code>echoip</code> script yields an output like this:

<pre><code>$ echoip
public: 26.106.59.169
en0: 10.1.10.2
</code></pre>

blocks|key|704128|text|我不喜欢在脚本中使用awk之类的东西。ip可以选择以JSON格式输出。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|704129|如果省略$interface，那么您将获得所有ip地址：|704130|ip+-json+addr+show+$interface+%7C+\
++jq+-r+'.[]+%7C+.addr_info[]+%7C+select(.family+==+"inet")+%7C+.local'|code-block|syntax|javascript|704131|entityMap^0|A|3|J|2|0|4|A|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

I prefer not to use <code>awk</code> and such in scripts.. <code>ip</code> has the option to output in JSON.

If you leave out <code>$interface</code> then you get all of the ip addresses:

<pre><code>ip -json addr show $interface | \
 jq -r '.[] | .addr_info[] | select(.family == "inet") | .local'
</code></pre>

blocks|key|704402|text|最简单的方法就是像Mikko说的那样|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|704403|hostname+--all-ip-addresses|code-block|syntax|javascript|704404|输出|704405|📷|atomic|704406|​|704407|对于更多细节，您也可以这样做：|704408|ip+route|704409|704410|704411|704412|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/65347387/9560693|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/da6a1db711c9cb432f3ba87e6f3ffa62.png|imageAlt|2|https://ask.qcloudimg.com/http-save/yehe-900000/839a204c46846932b09d9f0294ccefe9.png^0|9|5|0|0|0|0|0|1|1|0|0|0|0|0|0|1|2|0|0^^$0|@$1|2|3|4|5|6|7|1C|8|@]|9|@$A|1D|B|1E|1|1F]]|C|$]]|$1|D|3|E|5|F|7|1G|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|1H|8|@]|9|@]|C|$]]|$1|K|3|L|5|M|7|1I|8|@]|9|@$A|1J|B|1K|1|1L]]|C|$]]|$1|N|3|O|5|6|7|1M|8|@]|9|@]|C|$]]|$1|P|3|Q|5|6|7|1N|8|@]|9|@]|C|$]]|$1|R|3|S|5|F|7|1O|8|@]|9|@]|C|$G|H]]|$1|T|3|J|5|6|7|1P|8|@]|9|@]|C|$]]|$1|U|3|L|5|M|7|1Q|8|@]|9|@$A|1R|B|1S|1|1T]]|C|$]]|$1|V|3|O|5|6|7|1U|8|@]|9|@]|C|$]]|$1|W|3|-4|5|6|7|1V|8|@]|9|@]|C|$]]]|X|$Y|$5|Z|10|11|C|$12|13]]|14|$5|15|10|16|C|$17|18|19|-4]]|1A|$5|15|10|16|C|$17|1B|19|-4]]]]

the easiest way is as <a href="https://stackoverflow.com/a/65347387/9560693">Mikko</a> said
<pre><code>hostname --all-ip-addresses
</code></pre>
the output
<a href="https://i.stack.imgur.com/Z4Fdk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Z4Fdk.png" alt="enter image description here" /></a>
you can also do that for little more details :
<pre><code>ip route
</code></pre>
the output
<a href="https://i.stack.imgur.com/7X0gN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7X0gN.png" alt="enter image description here" /></a>

blocks|key|487896|text|使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|487897|/sbin/ifconfig+$(netstat+-nr+%7C+tail+-1+%7C+awk+'{print+$NF}')+%7C+awk+-F:+'/inet+/{print+$2}'+%7C+cut+-f1+-d+'+'|code-block|syntax|javascript|487898|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|$]]

Use the following command:

<pre><code>/sbin/ifconfig $(netstat -nr | tail -1 | awk '{print $NF}') | awk -F: '/inet /{print $2}' | cut -f1 -d ' '
</code></pre>

blocks|key|487950|text|下面是我的版本，在这个版本中，您可以传递一个按优先级排序的接口列表：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|487951|getIpFromInterface()
{
++++interface=$1
++++ifconfig+${interface}++>+/dev/null+2>&1+&&+ifconfig+${interface}+%7C+awk+-F'inet+'+'{+print+$2+}'+%7C+awk+'{+print+$1+}'+%7C+grep+.
}

getCurrentIpAddress(){
++++IFLIST=(${@:-${IFLIST[@]}})
++++for+currentInterface+in+${IFLIST[@]}
++++do
++++++++IP=$(getIpFromInterface++$currentInterface)
++++++++[[+-z+"$IP"+]]+&&+continue
++++echo+${IP/*:}
++++return
++++done
}

IFLIST=(tap0+en1+en0)
getCurrentIpAddress+$@|code-block|syntax|javascript|487952|因此，如果我连接了VPN、Wifi和以太网，我的VPN地址(在接口tap0上)将会返回。该脚本可以在linux和osx上运行，并且如果您想要覆盖IFLIST，则可以使用参数|487953|请注意，如果您想使用IPV6，则必须将“inet”替换为“inet6”。|487954|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]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Here is my version, in which you can pass a list of interfaces, ordered by priority:

<pre><code>getIpFromInterface()
{
 interface=$1
 ifconfig ${interface} &gt; /dev/null 2&gt;&amp;1 &amp;&amp; ifconfig ${interface} | awk -F'inet ' '{ print $2 }' | awk '{ print $1 }' | grep .
}

getCurrentIpAddress(){
 IFLIST=(${@:-${IFLIST[@]}})
 for currentInterface in ${IFLIST[@]}
 do
 IP=$(getIpFromInterface $currentInterface)
 [[ -z "$IP" ]] &amp;&amp; continue
 echo ${IP/*:}
 return
 done
}

IFLIST=(tap0 en1 en0)
getCurrentIpAddress $@
</code></pre>

So if I'm connected with VPN, Wifi and ethernet, my VPN address (on interface tap0) will be returned. The script works on both linux and osx, and can take arguments if you want to override IFLIST 

Note that if you want to use IPV6, you'll have to replace 'inet ' by 'inet6'.

blocks|key|488142|text|使用这一行脚本：ifconfig+%7C+grep+"inet+"+%7C+grep+-v+127.0.0.1%7Cawk+'match($0,+/([0-9]%2B\.[0-9]%2B\.[0-9]%2B\.[0-9]%2B)/)+{print+substr($0,RSTART,RLENGTH)}'+mac和linux+(在ubuntu中测试)都可以工作。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|488143|entityMap^0|8|3L|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|$]]

use this one line script:
<code>
ifconfig | grep "inet " | grep -v 127.0.0.1|awk 'match($0, /([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)/) {print substr($0,RSTART,RLENGTH)}'
</code>
mac &amp; linux (tested in ubuntu) both works.

blocks|key|703979|text|在man+hostname中，有一种更简单的方法，它可以自动排除环回IP，并仅显示分配给主机ip地址的所有地址的空格分隔列表：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|703980|root@srv:~#+hostname+--all-ip-addresses
11.12.13.14+192.168.15.19+

root@srv:~#+ip+a
1:+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+forever
2:+venet0:+<BROADCAST,POINTOPOINT,NOARP,UP,LOWER_UP>+mtu+1500+qdisc+noqueue+state+UNKNOWN+
++link/void+
++inet+11.12.13.14/32+scope+global+venet0:0
++inet+192.168.15.19/32+scope+global+venet0:1|code-block|syntax|javascript|703981|entityMap^0|1|C|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|$]]

In <code>man hostname</code> there is even more easier way which automatically excluding loopback IP and showing only space separated list of all assigned to host ip addresses:

<pre><code>root@srv:~# hostname --all-ip-addresses
11.12.13.14 192.168.15.19 

root@srv:~# ip a
1: lo: &lt;LOOPBACK,UP,LOWER_UP&gt; 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 forever
2: venet0: &lt;BROADCAST,POINTOPOINT,NOARP,UP,LOWER_UP&gt; mtu 1500 qdisc noqueue state UNKNOWN 
 link/void 
 inet 11.12.13.14/32 scope global venet0:0
 inet 192.168.15.19/32 scope global venet0:1
</code></pre>

blocks|key|704277|text|默认路由的IPv4地址：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|704278|ip+address+show+$(ip+route+%7C+grep+"%5Edefault+"+%7C+head+-n1+%7C+grep+-Po+"(?<=dev+)[%5E+]%2B")+%7C+grep+-Po+"(?<=inet+)[%5E+/]%2B"|code-block|syntax|javascript|704279|默认路由的IPv6地址：|704280|ip+address+show+$(ip+route+%7C+grep+"%5Edefault+"+%7C+head+-n1+%7C+grep+-Po+"(?<=dev+)[%5E+]%2B")+%7C+grep+-Po+"(?<=inet6+)[%5E+/]%2B"|704281|这些只需要支持-P和-o的ip和grep命令。由于当系统具有足够复杂的网络设置时，ip+route可能会显示多个默认路由，因此需要head+-1。|offset|length|style|CODE|704282|如果您不介意哪个IP是哪个IP，您可以这样做|704283|ip+route+%7C+grep+-Po+'(?<=src+)[%5E+]%2B'|704284|或|704285|hostname+--all-ip-addresses|704286|entityMap^0|0|0|0|0|7|2|A|2|D|2|G|4|15|8|1T|7|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|14|8|@$M|15|N|16|O|P]|$M|17|N|18|O|P]|$M|19|N|1A|O|P]|$M|1B|N|1C|O|P]|$M|1D|N|1E|O|P]|$M|1F|N|1G|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1H|8|@]|9|@]|A|$]]|$1|S|3|T|5|D|7|1I|8|@]|9|@]|A|$E|F]]|$1|U|3|V|5|6|7|1J|8|@]|9|@]|A|$]]|$1|W|3|X|5|D|7|1K|8|@]|9|@]|A|$E|F]]|$1|Y|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|Z|$]]

The IPv4 address for the default route:
<pre><code>ip address show $(ip route | grep &quot;^default &quot; | head -n1 | grep -Po &quot;(?&lt;=dev )[^ ]+&quot;) | grep -Po &quot;(?&lt;=inet )[^ /]+&quot;
</code></pre>
The IPv6 address for the default route:
<pre><code>ip address show $(ip route | grep &quot;^default &quot; | head -n1 | grep -Po &quot;(?&lt;=dev )[^ ]+&quot;) | grep -Po &quot;(?&lt;=inet6 )[^ /]+&quot;
</code></pre>
These only require commands <code>ip</code> and <code>grep</code> with support for <code>-P</code> and <code>-o</code>. The <code>head -1</code> is required because <code>ip route</code> may show multiple default routes when system has complex enough network setup.
If you don't mind which IP is which, you can just do
<pre><code>ip route | grep -Po '(?&lt;=src )[^ ]+'
</code></pre>
or
<pre><code>hostname --all-ip-addresses
</code></pre>

blocks|key|488111|text|ip+addr%7Cawk+'/eth0/+&&+/inet/+{gsub(/\/[0-9][0-9]/,"");+print+$2}'|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|488112|显示您的所有ips|unstyled|488113|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>ip addr|awk '/eth0/ &amp;&amp; /inet/ {gsub(/\/[0-9][0-9]/,""); print $2}'
</code></pre>

shows all your ips

blocks|key|703838|text|在Redhat+64位上，这为我解决了问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|703839|ifconfig+$1%7Csed+-n+2p%7Cawk+'{+print+$2+}'%7Cawk+-F+:+'{+print+$2+}'|code-block|syntax|javascript|703840|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 Redhat 64bit, this solved problem for me.

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

blocks|key|703992|text|#!/bin/sh
#+Tested+on+Ubuntu+18.04+and+Alpine+Linux+
#+List+IPS+of+following+network+interfaces:
#+virtual+host+interfaces
#+PCI+interfaces
#+USB+interfaces
#+ACPI+interfaces
#+ETH+interfaces
for+NETWORK_INTERFACE+in+$(ls+/sys/class/net+-al+%7C+grep+-iE+"(/eth[0-9]%2B$%7Cvif%7Cpci%7Cacpi%7Cusb)"+%7C+sed+-E+"s@.*+([%5E+]*)+->.*@\1@");+do+
++++IPV4_ADDRESSES=$(ifconfig+$NETWORK_INTERFACE+%7C+grep+-iE+'(inet+addr[:+]%2B%7Cinet[:+]%2B)'+%7C+sed+-E+"s@\s*(inet+addr[:+]%2B%7Cinet[:+]%2B)([%5E+]*)+.*@\2@")
++++IPV6_ADDRESSES=$(ifconfig+$NETWORK_INTERFACE+%7C+grep+-iE+'(inet6+addr[:+]%2B%7Cinet6[:+]%2B)'+%7C+sed+-E+"s@\s*(inet6+addr[:+]%2B%7Cinet6[:+]%2B)([%5E+]*)+.*@\2@")
++++if+[+-n+"$IPV4_ADDRESSES"+]+%7C%7C+[+-n+"$IPV6_ADDRESSES"+];+then
++++++++echo+"NETWORK+INTERFACE=$NETWORK_INTERFACE"
++++++++for+IPV4_ADDRESS+in+$IPV4_ADDRESSES;+do+
++++++++++++echo+"IPV4=$IPV4_ADDRESS"
++++++++done
++++++++for+IPV6_ADDRESS+in+$IPV6_ADDRESSES;+do+
++++++++++++echo+"IPV6=$IPV6_ADDRESS"
++++++++done
++++fi
done|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|703993|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>#!/bin/sh
# Tested on Ubuntu 18.04 and Alpine Linux 
# List IPS of following network interfaces:
# virtual host interfaces
# PCI interfaces
# USB interfaces
# ACPI interfaces
# ETH interfaces
for NETWORK_INTERFACE in $(ls /sys/class/net -al | grep -iE "(/eth[0-9]+$|vif|pci|acpi|usb)" | sed -E "s@.* ([^ ]*) -&gt;.*@\1@"); do 
 IPV4_ADDRESSES=$(ifconfig $NETWORK_INTERFACE | grep -iE '(inet addr[: ]+|inet[: ]+)' | sed -E "s@\s*(inet addr[: ]+|inet[: ]+)([^ ]*) .*@\2@")
 IPV6_ADDRESSES=$(ifconfig $NETWORK_INTERFACE | grep -iE '(inet6 addr[: ]+|inet6[: ]+)' | sed -E "s@\s*(inet6 addr[: ]+|inet6[: ]+)([^ ]*) .*@\2@")
 if [ -n "$IPV4_ADDRESSES" ] || [ -n "$IPV6_ADDRESSES" ]; then
 echo "NETWORK INTERFACE=$NETWORK_INTERFACE"
 for IPV4_ADDRESS in $IPV4_ADDRESSES; do 
 echo "IPV4=$IPV4_ADDRESS"
 done
 for IPV6_ADDRESS in $IPV6_ADDRESSES; do 
 echo "IPV6=$IPV6_ADDRESS"
 done
 fi
done
</code></pre>

blocks|key|704028|text|当在NATed主机上查找您的外部IP地址时，相当多的答案建议使用基于HTTP的方法，如ifconfig.me：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|704029|$+curl+ifconfig.me/ip|code-block|syntax|javascript|704030|多年来，我看到许多这样的站点来来去去，我发现这种基于DNS的方法更健壮：|704031|$+dig+%2Bshort+myip.opendns.com+@resolver1.opendns.com|704032|我的~/.bashrc中有这个方便的别名|704033|alias+wip='dig+%2Bshort+myip.opendns.com+@resolver1.opendns.com'|704034|entityMap^0|17|B|0|0|0|0|2|9|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|T|$]]

When looking up your external IP address on a NATed host, quite a few answers suggest using HTTP based methods like <code>ifconfig.me</code> eg:

<pre><code>$ curl ifconfig.me/ip
</code></pre>

Over the years I have seen many of these sites come and go, I find this DNS based method more robust:

<pre><code>$ dig +short myip.opendns.com @resolver1.opendns.com
</code></pre>

I have this handy alias in my <code>~/.bashrc</code>:

<pre><code>alias wip='dig +short myip.opendns.com @resolver1.opendns.com'
</code></pre>

blocks|key|704173|text|如果您不想使用ifconfig或正则表达式...|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|704174|ip+addr+%7C+grep+eth0+%7C+grep+inet+%7C+awk+'{print+$2}'+%7C+cut+-d"/"+-f1|code-block|syntax|javascript|704175|entityMap^0|7|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|$]]

If you don't want to use <code>ifconfig</code> nor regex...
<pre><code>ip addr | grep eth0 | grep inet | awk '{print $2}' | cut -d&quot;/&quot; -f1
</code></pre>

blocks|key|488745|text|ip+adddr，捷径|type|unstyled|depth|inlineStyleRanges|entityRanges|data|488746|ip+-4+-br+addr+show+enp1s0+%7C+awk+-F"+"+'{print+$3}'%7Ccut+-d'/'+-f1|offset|length|style|CODE|488747|或缩短|488748|ip+-4+-br+a+s+enp1s0+%7C+awk+-F"+"+'{print+$3}'%7Ccut+-d'/'+-f1|488749|必须在大多数现代Linux发行版中工作|488750|entityMap^0|0|0|1T|0|0|0|1N|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@$D|R|E|S|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@$D|V|E|W|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|X|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|O|$]]

ip adddr, the short way
<code>ip -4 -br addr show enp1s0 | awk -F&quot; &quot; '{print $3}'|cut -d'/' -f1</code>
or shorten
<code>ip -4 -br a s enp1s0 | awk -F&quot; &quot; '{print $3}'|cut -d'/' -f1</code>
must work in most modern Linux distribution

blocks|key|704513|text|ip+-4+addr+show+eth0在某些机器上不起作用。例如，我得到这个错误：ip:+symbol+lookup+error:+ip:+undefined+symbol:+bpf_program__section_name,+version+LIBBPF_0.2.0|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|704514|这对我来说很有效：|704515|/sbin/ifconfig+eth0+%7C+grep+'inet+'+%7C+awk+'{+print+$2}'|code-block|syntax|javascript|704516|这比接受的答案少了一个管道。此外，我的ifconfig输出没有inet+addr。|704517|要获取IPv6地址，请使用以下命令：|704518|/sbin/ifconfig+eth0+%7C+grep+'inet6+'+%7C+awk+'{+print+$2}'|704519|entityMap^0|0|K|16|2M|0|0|0|V|9|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|14|8|@]|D|@]|E|$]]|$1|Q|3|R|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

<code>ip -4 addr show eth0</code> doesn't work on some machines. For example, I get this error:
<code>ip: symbol lookup error: ip: undefined symbol: bpf_program__section_name, version LIBBPF_0.2.0</code>
This works for me:
<pre><code>/sbin/ifconfig eth0 | grep 'inet ' | awk '{ print $2}'
</code></pre>
This has one less pipe than the accepted answer. In addition, my ifconfig output does not have <code>inet addr</code>.
To get the IPv6 address, use this:
<pre><code>/sbin/ifconfig eth0 | grep 'inet6 ' | awk '{ print $2}'
</code></pre>

blocks|key|487882|text|我将使用Hostname+-L来获取要在脚本中用作变量的IP。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|487883|entityMap^0|4|B|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|$]]

I would Use <code>Hostname -L</code> to get just the IP to use as a variable in a script.

I'm trying to use just the IP address (inet) as a parameter in a script I wrote.

Is there an easy way in a unix terminal to get just the IP address, rather than looking through <code>ifconfig</code>?

Which terminal command to get just IP address and nothing else?

Alpine Linux

路由

Ubuntu

Debian

Linux

JSON

我正在尝试仅使用IP地址(inet)作为我编写的脚本中的参数。在unix终端中，有没有一种简单的方法可以只获取IP地址，而不是通过ifconfig查找

问哪个终端命令只获取IP地址，而不获取其他地址？
EN

回答 22

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问哪个终端命令只获取IP地址，而不获取其他地址？EN

回答 22

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问哪个终端命令只获取IP地址，而不获取其他地址？
EN