# dnf install gcc*
# dnf install tar
# dnf install wget
# dnf install postfix
# dnf install cyrus-sasl cyrus-sasl-plain
# systemctl start postfix.service
# systemctl enable postfix.service
# dnf install s-nail
# dnf install bind-utils
# dnf install openssl-devel
# dnf install rsync
# dnf --enablerepo=epel install ncdu