### For Linux/Mac OS search (sudo) run this in the terminal:
$ lsof -i tcp:3000
$ kill -9 PID
### On Windows:
netstat -ano | findstr :3000
tskill typeyourPIDhere
### change tskill for taskkill in git bash
kill -9 $(sudo lsof -t -i:8080)
kill $(lsof -t -i:3000)
kill $(lsof -ti:3000)
sudo kill -9 $(sudo lsof -t -i:8080)
kill $(lsof -t -i:8080)
//kill port 8080
// Option 1: if you have npm@5.2.0^ version
npx kill-port 8080
// Linux
kill -9 $(lsof -t -i tcp:8080)
// Windows command line:
for /f "tokens=5" %a in ('netstat -aon ^| find ":8080" ^| find "LISTENING"') do taskkill /f /pid %a
// Windows bat-file:
for /f "tokens=5" %%a in ('netstat -aon ^| find ":8080" ^| find "LISTENING"') do taskkill /f /pid %%a
kill -9 $(lsof -t -i tcp:8080)
sudo kill -9 $(sudo lsof -t -i:9001)
sudo lsof -t -i tcp:80 | sudo xargs kill
sudo kill -9 $(sudo lsof -t -i:3000)
netstat -aon | findstr 8080
taskkill /f /pid 77777
sudo kill -9 $(lsof -i :3000 -t)
fuser -n tcp -k 9001
kill -9 $(sudo lsof -t -i:'portName')
//Ex. if portname is 3000
//then we will execute "kill -9 $(sudo lsof -t -i:3000)"
fuser -k -n tcp 3000
:8080.
C:Userspsmith>netstat -ano|findstr "PID :8080"
Proto Local Address Foreign Address State PID
TCP 0.0.0.0:8081 0.0.0.0:0 LISTENING 18264
taskkill /pid 18264 /f
npx kill-port <port#>