find port and kill code example

Example 1: stop port 3000 mac

sudo lsof -i :3000
kill -9 PID

Example 2: kill port mac

sudo lsof -i :3000

Example 3: kill process on port

#To list any process listening to the port 8080:
lsof -i:8080

#To kill any process listening to the port 8080:
kill $(lsof -t -i:8080)

#or more violently:
kill -9 $(lsof -t -i:8080)

Example 4: kill all ports mac

lsof -n -i TCP:8080
COMMAND   PID   USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
node     54762   user   23u  IPv4 XXXXXXXXX      0t0  TCP 127.0.0.1:http-alt (LISTEN)
PID // is second field in the response . Then, kill that process:

kill -9 54762 // here put PID number found on the table 54762

Example 5: cli kill what is listening on port

kill $(lsof -t -i:53) #Kill the process listening on port 53