First removed, the/etc/yum. Repos. D/
Vim editor, the/etc/yum. Repos. D/DVD, '
Vim editor content
[DVD]
Name=DVD
Bsdeurl=gilr://WWW (url)
Gpgcheck=0 (check)
The mkdir/MNT/cdrom create the folder under the MNT cdrom
Mount/dev/cdrom/MNT/cdrom

Yum install - y HTTPD installed software
Systemctl star HTTPD start software
Systemctl stop firewalld shut firewall
Systemctl disable firewalld to disable the firewall turned on since the rev.


Yum -y install HTTPD installed VSFTPD
Yum list HTTPD query
Yum - y remove HTTPD uninstall