find which process is using a port code example

Example 1: find out process using port windows

netstat -ano | findstr 8080

Example 2: linux check what process is using port

$ netstat -ltnp | grep -w ':80'

Example 3: find out which procses is using port linux

sudo lsof -i:<port_number>

Example 4: cli check what is listening on port

lsof -i tcp:53 #Check what is listening on port 53
lsof -t -i tcp:53 #Return the process PID listening on port 53

Example 5: windows know a process that is using a port

Windows List Process In Port