tar xzvf .tar.gz
tar czvf .tar.gz /
yum list
yum update
yum remove
yum install/reinstall
systemctl restart /stop/start
systemctl enable/disable
systemctl status .service
mkdir -p /www
cd /
ls vim :q :x :wq
web
<virtualhost *:80>
servername www.cdll.com
documentroot "/www/web1"
</virtualhost>
<Directory "/www/web1/">
AllowOverride None
Options None
Require all granted
</Directory>