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.
现在你将在该目录中，你可能要查看所有的文件和目录首先，所以你可以键入命令迪尔和记者进入。
Now that you are in that directory, you may want to view all of the files and directories first, so you can type in the command dir and press Enter.
主要的功能是遍历目录，根据命令行参数可以实现文件拷贝文件查看等功能。
Their main role is to traverse the directory, according to the command line parameters can be achieved in document features such as copy files to view.
主要的功能是遍历目录，根据命令行参数可以实现文件拷贝文件查看等功能。
Their main role is to traverse the directory, according to the command line parameters can be achieved in document features such as copy files to view.
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