If you're using NodeJS, sometimes you'll get an error like this:
Error: listen EADDRINUSE :::5000 at Object.exports._errnoException at exports._exceptionWithHostPort at Server.setupListenHandle [as _listen2] at listenInCluster at Server.listen at Function.app.listen
What this error means is that you're trying to bind the app but the server is already in use. The only way to to first kill the server. Here's how:
You can always use good ol'
grep to find which process is already running. First run process then use grep to filter out any process that has the name "node". This command contains an extra
grep -v grep so that it ignores the grep process.
ps | grep node | grep -v grep
ps -ax | grep node
You can search using the tcp port.
lsof -i tcp:5000
You can also use netstat with grep to find the process with the port.
netstat -punta | grep 5000
Once you find the culprit, look for the
PID. This is a number you will use to stop the process.
kill -9 <PID number>