Kill any process using port
USE THIS COMMAND ON YOUR OWN RISK !
sudo kill -9 $(sudo lsof -t -i:4200)
If you want to check that if process running than and than kill the process , use bellow one
if sudo lsof -t -i:4200; then sudo kill -9 $(sudo lsof -t -i:4200); fi
Above command will check that process is running than kill by process id.
Kill any process by it's process name
her I am killing htop process using bellow command.
sudo pkill htop
sh: 1: cross-env: Permission denied npm ERR! code ELIFECYCLE
sudo chown -R $USER /usr/local chmod -R a+x node_modules