systemctl 用法
# 将服务加入开机自启动
systemctl enable Service_Name
# 禁止服务开机自启动
systemctl disable Service_Name
# 查看服务是否开机自启动
systemctl is-enabled Service_Name
# 查看所有开机自启动服务
systemctl list-unit-files --type service | grep 'enabled'
systemctl enable sshd # 服务名
systemctl enable sshd.service # 服务对应的unit文件
systemctl --force enable Service_Name