Find the tftp file in /etc/xinetd.d/
[root@cyruslab ~]# cd /
[root@cyruslab /]# ls
bin boot cgroup dev etc home lib lost+found media mnt null opt proc root sbin selinux srv sys tmp usr var
Use a text editor to edit the configuration
[root@cyruslab /]# gedit /etc/xinetd.d/tftp
Change from disable = yes to disable = no
Activate the tftpd
A program known as service is found in /sbin directory.
cyruslab 