free port in linux

atem answered on June 30, 2020 Popularity 10/10 Helpfulness 10/10

answer free port in linux

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free port in linux

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netstat -tulnap        // list all ports and processes
netstat -anp|grep "port_number"     // show port details
sudo fuser -k Port_Number/tcp       // free the port needed
# or
lsof -n -i :'port-number' | grep LISTEN  // get port details
# sample  response:  java   4744 (PID)  test  364u  IP0 asdasdasda   0t0  TCP *:port-number (LISTEN)
kill -9 PID  // free port

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Source: stackoverflow.com

Tags: free linux port shell

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Contributed on Jun 30 2020

atem

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free the port in linux

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1. See all processes listening on port 3000

$ lsof -i:3000
# COMMAND   PID       USER  FD   TYPE DEVICE SIZE/OFF NODE NAME                                  │
# node    18419 myUserName  20u  IPv6 105280      0t0  TCP *:hbci (LISTEN)

2. Kill it

$ kill $(lsof -t -i:3000)

The port :3000 should be free. Check it again with $ lsof -i:3000 or try to start your app

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Source: Grepper

Tags: free

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Contributed on Feb 20 2023

The Stanliest Stanley

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free port in linux

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