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Rails server says port already used, how to kill that process?
...ype this in your terminal to find out the PID of the process:
$ lsof -wni tcp:3000
Then, use the number in the PID column to kill the process:
$ kill -9 PID
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stop all instances of node.js server
...NING" | find "8080"
The fifth column of the output is the process ID:
TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 14828
TCP [::]:8080 [::]:0 LISTENING 14828
You could then kill the process with taskkill /pid 14828. If the proces...
node and Error: EMFILE, too many open files
.../OFF NODE NAME
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nodejs 12211 root 1012u IPv4 151317015 0t0 TCP 10.101.42.209:40371->54.236.3.170:80 (ESTABLISHED)
nodejs 12211 root 1013u IPv4 151279902 0t0 TCP 10.101.42.209:43656->54.236.3.172:80 (ESTABLISHED)
nodejs 12211 root 1014u IPv4 151317016 0t...
What can be the reasons of connection refused errors?
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If you try to open a TCP connection to another host and see the error "Connection refused," it means that
You sent a TCP SYN packet to the other host.
Then you received a TCP RST packet in reply.
RST is a bit on the TCP packet which indicate...
How to close TCP and UDP ports via windows command line
Does somebody knows how to close a TCP or UDP socket for a single connection via windows command line?
17 Answers
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Checking network connection
...p (0.0048s latency).
Not shown: 999 filtered ports
PORT STATE SERVICE
53/tcp open domain
Nmap done: 1 IP address (1 host up) scanned in 23.81 seconds
As we can see, 53/tcp is open and non-filtered. If you are a non-root user, remember to use sudo or the -Pn argument for Nmap to send crafted pro...
Open firewall port on CentOS 7
....
In the case of public try:
firewall-cmd --zone=public --add-port=2888/tcp --permanent
Then remember to reload the firewall for changes to take effect.
firewall-cmd --reload
Otherwise, substitute public for your zone, for example, if your zone is dmz:
firewall-cmd --zone=dmz --add-port=288...
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...跳过连接事件，继续保持睡眠节省电量。Supervision Time-out监控超时，是两次成功连接事件之间的最长时间。如果在此时间内没有成功的连接事件，设备将终止连接并返回到未连接状态。该参数值以10 ms为单位，监控超时值可以从...
How to kill a process on a port on ubuntu
...? If Linux specific then, even this command works os.system("fuser -k 8080/tcp");
– Ridhuvarshan
Jul 25 '18 at 12:04
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Thin web server: `start_tcp_server': no acceptor (RuntimeError) after git branch checkout
... port 3000 may already be in use. Look at http://mrjaba.posterous.com/starttcpserver-no-acceptor-runtimeerror
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