How to kill a process on a port on Ubuntu

I am trying to kill a process in the command line for a specific port in Ubuntu. If I run this command, I get the port: ```lang-none sudo lsof -t -i:9001 ``` so...now I want to run: ```lang-none sudo kill 'sudo lsof -t -i:9001' ``` I get this error message: ```lang-none ERROR: garbage process ID "lsof -t -i:9001". Usage: kill pid ... Send SIGTERM to every process listed. kill signal pid ... Send a signal to every process listed. kill -s signal pid ... Send a signal to every process listed. kill -l List all signal names. kill -L List all signal names in a nice table. kill -l signal Convert between signal numbers and names. ``` I tried `sudo kill 'lsof -t -i:9001'` as well.