RHEL restart NFS server HowTo - Linux / Unix Q & A from nixCraft

Redhat / RHEL / CentOS Linux: Start / Stop / Restart NFS Service [ server ]

in BASH Shell, Debian / Ubuntu, Linux, RedHat and Friends, Suse last updated May 3, 2017

How do I start and stop the NFS service and/or server using the command prompt? How do I make sure NFS always stars automatically when system boots or restarts under RHEL based systems?