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Running such commands is part of system administration — and as a single user of a UNIX system, you are your own system administrator.
运行上述命令是系统管理员的部分工作，作为一个UNIX系统的单个用户，你就是你自己的系统管理员。
The traditional method is suitable for a simple, single user (non-concurrent) system.
传统方法适合于简单的、单用户(非并发)系统。
You can do this on a system that is running in single-user mode, or on a live and running system where you need to ensure that the files are available during the move.
您可以在运行于单用户模式的系统或者活动的 和运行的系统（需要确保文件在移动的过程中仍然可用）中完成这项任务。
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