如何找出哪个 Node.js pid 在哪个端口上运行
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How to find out which Node.js pid is running on which port
提问by Pardoner
I'd like to restart one of many Node.js processes I have running on my server. If I run ps ax | grep nodeI get a list of all my Node proccesses but it doesn't tell me which port they're on. How do I kill the one running on port 3000 (for instance). What is a good way to manage multiple Node processes?
我想重新启动我在服务器上运行的许多 Node.js 进程之一。如果我运行，ps ax | grep node我会得到我所有 Node 进程的列表，但它没有告诉我它们在哪个端口上。我如何杀死在端口 3000 上运行的那个（例如）。管理多个 Node 进程的好方法是什么？
回答by David Weldon
If you run:
如果你运行：
$ netstat -anp 2> /dev/null | grep :3000
You should see something like:
你应该看到类似的东西：
tcp 0 0 0.0.0.0:3000 0.0.0.0:* LISTEN 5902/node
In this case the 5902is the pid. You can use something like this to kill it:
在这种情况下，5902是 pid。你可以使用这样的东西来杀死它：
netstat -anp 2> /dev/null | grep :3000 | awk '{ print }' | cut -d'/' -f1 | xargs kill
Here is an alternative version using egrepwhich may be a little better because it searches specifically for the string 'node':
这是一个替代版本，使用egrep它可能会好一点，因为它专门搜索字符串“节点”：
netstat -anp 2> /dev/null | grep :3000 | egrep -o "[0-9]+/node" | cut -d'/' -f1 | xargs kill
You can turn the above into a script or place the following in your ~/.bashrc:
您可以将上述内容转换为脚本或将以下内容放入您的~/.bashrc：
function smackdown () {
netstat -anp 2> /dev/null |
grep :$@ |
egrep -o "[0-9]+/node" |
cut -d'/' -f1 |
xargs kill;
}
and now you can run:
现在你可以运行：
$ smackdown 3000
回答by Naveed Ul Islam
This saved me a lot of time:
这为我节省了很多时间：
pkill node
pkill node
回答by Michael Cole
A one-liner is
单线是
lsof -n -i:5000 | grep LISTEN | awk '{ print }' | uniq | xargs -r kill -9
You only need the sudo if you are killing a process your user didn't start. If your user started the node process, you can probably kill it w/o sudo.
如果您要终止用户未启动的进程，则只需要 sudo。如果您的用户启动了节点进程，您可以在不使用 sudo 的情况下终止它。
Good luck!
祝你好运！
回答by idrarig
Why not a simple fuserbased solution?
为什么不是基于简单fuser的解决方案？
If you don't care about whether the process using port 3000 is node, it could be as simple as
如果不关心使用3000端口的进程是不是node，可以这么简单
fuser -k -n tcp 3000
If you wan't to be sure you don't kill other processes, you could go with something like
如果您不想确保不会杀死其他进程，则可以使用类似的方法
PID="$(fuser -n tcp 3000 2>/dev/null)" \
test "node"="$(ps -p $PID -o comm=)" && kill $PID
