Getting help: 寻求帮助 R commands; case sensitivity etc: R 命令，大小写敏感等 Recall and correction of previous commands: 重新调用和修正先前的命令 ..
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r-commands 远程命令
As with some other commands you met in the articles for topic 103, you can even use the -r (or — recursive) option to operate recursively on directories and files.
正如在topic 103的文章中看到其他命令一样，您甚至可以使用- r(或者——recur sive)选项在目录和文件上进行递归操作。
Replace the B with a using the vi-style "replace single character" commands (that is, click r, and then type a).
使用vi风格的“替换单个字符”命令将b替换为a(即单击r，然后键入A)。
As with many of the commands covered in this tutorial, CHGRP has a -r option to allow changes to be applied recursively to all selected files and subdirectories.
正如该教程中的许多其他命令，chgrp有一个- r选项，允许将变更递归应用到所有所选的的文件和子目录中。
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