您已经学习了几个基本命令，能够在目录结构中移动、创建和修改文件、查看正在运行的进程以及管理用户和系统。
You've learned a few of the basic commands to help you maneuver through a directory structure, create and modify files, see what processes are running, and maybe even administer users and the system.
使用lsattr命令查看文件或者目录是否设置了不可变标识(或者任何其他属性)。
Use the lsattr command to see whether the immutable flag (or any other attribute) is set for a file or directory.
我可以对此目录执行cd命令并查看快照映像中的文件。
I can CD to this directory and view the files in the snapshot image.
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