blocks|key|262465|text|要查找该进程，请尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|262466|sudo+lsof+-i+:portNumber|code-block|syntax|javascript|262467|使用其PID终止当前正在使用该端口的进程|262468|kill+PID|262469|然后检查端口是否关闭。如果没有，请尝试：|262470|kill+-9+PID|262471|如果前面的方法不起作用，我只会执行以下操作|262472|sudo+kill+-9+PID|262473|为了安全起见。同样，根据您打开端口的方式，这可能无关紧要。|262474|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

To find the process try:

<pre><code>sudo lsof -i :portNumber
</code></pre>

Kill the process which is currently using the port using its PID

<pre><code>kill PID
</code></pre>

and then check to see if the port closed. If not, try:

<pre><code>kill -9 PID
</code></pre>

I would only do the following if the previous didnt work

<pre><code>sudo kill -9 PID
</code></pre>

Just to be safe. Again depending on how you opened the port, this may not matter.

blocks|key|479344|text|在2018年，以下是我使用MacOS+HighSierra时的用法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|479345|sudo+lsof+-nPi+:yourPortNumber|offset|length|style|CODE|479346|然后：|479347|sudo+kill+-9+yourPIDnumber|479348|entityMap^0|0|0|U|0|0|0|Q|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|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@$D|T|E|U|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|M|$]]

In 2018 here is what worked for me using MacOS HighSierra:
<code>sudo lsof -nPi :yourPortNumber</code>
then:
<code>sudo kill -9 yourPIDnumber</code>

blocks|key|262638|text|非常简单的查找端口5900：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|262639|sudo+lsof+-i+:5900|code-block|syntax|javascript|262640|然后考虑将59553作为PID|262641|sudo+kill+59553|262642|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|$]]

very simple find port 5900: 

<pre><code>sudo lsof -i :5900
</code></pre>

then considering 59553 as PID

<pre><code>sudo kill 59553
</code></pre>

blocks|key|262359|text|无论您如何打开端口，都会以相同的方式关闭它。例如，如果您创建了一个套接字，将其绑定到端口0.0.0.0:5955，并调用listen，则关闭该套接字。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|262360|您也可以直接杀死打开端口的进程。|262361|如果您想要找出哪个进程打开了端口，请尝试执行以下操作：|262362|lsof+-i+:5955|code-block|syntax|javascript|262363|如果您想知道端口是否打开，可以执行相同的lsof命令(如果任何进程打开它，则它是打开的；否则，它不是打开的)，或者您可以只尝试连接到它，例如：|262364|nc+localhost+5955|262365|如果它立即返回，但没有输出，则端口未打开。|262366|值得一提的是，从技术上讲，它不是一个开放的端口，而是一个主机:端口组合。例如，如果您作为10.0.1.2插入到LAN中，则可以将套接字绑定到127.0.0.1:5955或10.0.1.2:5955，而两者都不会影响另一个，也可以绑定到0.0.0.0:5955来同时处理这两个问题。您可以使用ifconfig命令查看计算机的所有IPv4和IPv6地址。|offset|length|style|CODE|262367|entityMap^0|0|0|0|0|0|0|0|41|8|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|15|8|@$S|16|T|17|U|V]]|9|@]|A|$]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

However you opened the port, you close it in the same way. For example, if you created a socket, bound it to port 0.0.0.0:5955, and called listen, close that same socket.

You can also just kill the process that has the port open.

If you want to find out what process has a port open, try this:

<pre><code>lsof -i :5955
</code></pre>

If you want to know whether a port is open, you can do the same lsof command (if any process has it open, it's open; otherwise, it's not), or you can just try to connect to it, e.g.:

<pre><code>nc localhost 5955
</code></pre>

If it returns immediately with no output, the port isn't open.

It may be worth mentioning that, technically speaking, it's not a port that's open, but a host:port combination. For example, if you're plugged into a LAN as 10.0.1.2, you could bind a socket to 127.0.0.1:5955, or 10.0.1.2:5955, without either one affecting the other, or you could bind to 0.0.0.0:5955 to handle both at once. You can see all of your computer's IPv4 and IPv6 addresses with the <code>ifconfig</code> command.

blocks|key|262819|text|一个衬垫最好|type|unstyled|depth|inlineStyleRanges|entityRanges|data|262820|kill+-9+$(lsof+-i:PORT+-t)+2>+/dev/null|code-block|syntax|javascript|262821|示例:在mac上，想要清除端口9604。听从命令就像一种魔咒|262822|+kill+-9+$(lsof+-i:9604+-t)+2>+/dev/null+|262823|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|$]]

One liner is best

<pre><code>kill -9 $(lsof -i:PORT -t) 2&gt; /dev/null
</code></pre>

Example :
On mac, wanted to clear port 9604. Following command worked like a charm

<pre><code> kill -9 $(lsof -i:9604 -t) 2&gt; /dev/null 
</code></pre>

blocks|key|262561|text|如上所述，我结合使用了lsof和kill；但是我编写了一个快速的小bash脚本来自动化这个过程。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|262562|使用此脚本，您只需在任何地方输入killport+3000，它就会杀死在端口3000上运行的所有进程。|262563|https://github.com/xtrasimplicity/killport|262564|entityMap|0|LINK|mutability|MUTABLE|url^0|B|4|G|4|0|G|D|12|4|0|0|16|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|10|8|@]|D|@$9|11|A|12|1|13]]|E|$]]|$1|J|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|I]]]]

I use <code>lsof</code> combined with <code>kill</code>, as mentioned above; but wrote a quick little bash script to automate this process.

With this script, you can simply type <code>killport 3000</code> from anywhere, and it will kill all processes running on port <code>3000</code>.

<a href="https://github.com/xtrasimplicity/killport" rel="noreferrer">https://github.com/xtrasimplicity/killport</a>

blocks|key|262617|text|为此，我创建了一个函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|262618|function+free_port()+{
++++if+[+-z+$1+]+
++++then
++++++++echo+no+Port+given
++++else
++++++++PORT=$1;
++++++++PID=$(sudo+lsof+-i+:$PORT)+#+store+the+PID,+that+is+using+this+port+

++++++++if+[+-z+$PID+]+
++++++++then
++++++++++++echo+port:+$PORT+is+already+free.
++++++++else
++++++++++++sudo+kill+-9+$PID+#+kill+the+process,+which+frees+the+port
++++++++++++echo+port:+$PORT+is+now+free.
++++++++fi
++++fi
}

free_port+80+#+you+need+to+change+this+port+number|code-block|syntax|javascript|262619|在终端中复制和粘贴这段代码可以释放所需的端口。只需记住更改最后一行的端口号即可。|262620|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 created a function for this purpose.

<pre><code>function free_port() {
 if [ -z $1 ] 
 then
 echo no Port given
 else
 PORT=$1;
 PID=$(sudo lsof -i :$PORT) # store the PID, that is using this port 

 if [ -z $PID ] 
 then
 echo port: $PORT is already free.
 else
 sudo kill -9 $PID # kill the process, which frees the port
 echo port: $PORT is now free.
 fi
 fi
}

free_port 80 # you need to change this port number
</code></pre>

Copy &amp; pasting this block of code in your terminal should free your desired port. Just remember to change the port number in last line.

blocks|key|479309|text|请在下面尝试，假设运行端口为8000|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|479310|free-port()+{+kill+"$(lsof+-t+-i+:8000)";+}|code-block|syntax|javascript|479311|我找到了参考here|479312|entityMap|0|LINK|mutability|MUTABLE|url|https://medium.freecodecamp.org/find-and-kill-port-processes-on-a-mac-using-bash-c5e95b9e704e^0|E|4|0|0|6|4|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|@$9|Z|A|10|1|11]]|E|$]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

try below, assuming running port is <code>8000</code>:

<pre><code>free-port() { kill "$(lsof -t -i :8000)"; }
</code></pre>

I found the reference <a href="https://medium.freecodecamp.org/find-and-kill-port-processes-on-a-mac-using-bash-c5e95b9e704e" rel="nofollow noreferrer">here</a>

blocks|key|262863|text|这似乎对我很有效。只需将your_port_number更改为您想要停止的端口号。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|262864|sudo+lsof+-t+-i+tcp:your_port_number+%7C+xargs+kill+-9|262865|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

This seem to work for me. Just change your_port_number into the port number you want to stop.
sudo lsof -t -i tcp:your_port_number | xargs kill -9

blocks|key|262890|text|使用命令查找进程ID|type|unstyled|depth|inlineStyleRanges|entityRanges|data|262891|lsof+-n+-i4TCP:8080+|code-block|syntax|javascript|262892|在获得processId之后|262893|sudo+kill+-9+processID|262894|然后提供您的系统密码。|262895|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]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Find the process ID using command
<pre><code>lsof -n -i4TCP:8080 
</code></pre>
After getting the processId
<pre><code>sudo kill -9 processID
</code></pre>
Then provide your system password.

blocks|key|479097|text|当打开端口的程序退出时，端口将自动关闭。如果您杀死了运行此服务器的Java进程，应该就可以了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|479098|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

When the program that opened the port exits, the port will be closed automatically. If you kill the Java process running this server, that should do it.

I opened port #5955 from a java class to comunicate from a client. How do i close this port after I am done? and also which command can show me if port open or closed?

How do I close an open port from the terminal on the Mac?

我从一个java类打开了端口#5955，以便从客户端进行通信。完成后如何关闭此端口？还有，哪个命令可以显示端口是打开还是关闭？

问如何从Mac上的终端关闭打开的端口？
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问如何从Mac上的终端关闭打开的端口？EN

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问如何从Mac上的终端关闭打开的端口？
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