check process using port linux code example

Example 1: linux check what process is using port

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

Example 2: ubuntu check process on port

sudo lsof -i:22

Example 3: process runninng on particular port

sudo ss -lptn 'sport = :80'

Example 4: bash list process on port

sudo lsof -i:3000
#Just change the port 3000

Example 5: linux which process is using a port

$ sudo netstat -ltnp | grep ':80'