In the past, packages were built by root, the superuser, because root was the only user able to access the system source code repository.
在过去，包只能由根用户和超级用户构建，因为只有根用户才能访问系统源代码库。
System services might be owned by special users or by the superuser, root.
系统服务的所有者可能是特殊用户或超级用户root。
More often than not, the user is root, the superuser, but some services prefer or must be run as a separate user created specifically for the service.
这个用户常常是根用户(超级用户)，但是某些服务最好或必须作为服务的创建者运行。
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