From: Adekoya Adekunle <adekunleadekoya at gmail.com> > I want to know the right command to type from a bash shell so that i can > 1) Check the version of my cent os > 2) Check all the open ports (tcp and udp) on my machine > 3) Open a specific port say port 3306 so that a telnet request from a > remote machiene can be accepted > 4) Disable the effect of 3 above in case I want to 1. cat /etc/centos-release 2. netstat -nltup 3. I let it as a google exercise... JD