自動起動確認
systemctl list-unit-files -t service
postfixの場合
systemctl list-unit-files -t service | grep postfix
httpdの場合
systemctl list-unit-files -t service | grep httpd
bind自動起動確認
systemctl list-unit-files -t service | grep named
systemctl list-unit-files -t service | grep named-chroot.service
bind自動起動有効
systemctl enable named-chroot.service
bind自動起動無効
systemctl disable named-chroot.service
自動起動設定
systemctl enable httpd.service
自動起動解除
systemctl disable httpd.service
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