how to close a port in ubuntu code example

Example 1: kill port ubuntu

sudo kill -9 `sudo lsof -t -i:9001`

Example 2: stop port ubintu

sudo kill -9 `sudo lsof -t -i:9001`

Example 3: kill port ubuntu

sudo kill -9 `sudo lsof -t -i:3002`

Example 4: how to stop running port in ubuntu

sudo kill -9 `sudo lsof -t -i:{PORT_NUMBER}`

Example 5: kill a port in ubuntu

kill -9 $(sudo lsof -t -i:'portName')
//Ex. if portname is 3000
//then we will execute "kill -9 $(sudo lsof -t -i:3000)"

Example 6: how to kill port in ubuntu

sudo lsof -t -i:9001