What does -R mean?

The -R option typically stands for "recursive" in command-line contexts, especially in Unix/Linux commands. Here are a couple of common uses:

cp -R: When used with the cp command, it copies directories and their contents recursively.

Example:
```
cp -R source_directory/ destination_directory/
```
rm -R: When used with the rm command, it removes directories and their contents recursively.

Example:
```
rm -R directory_to_remove/
```

In both cases, using -R allows you to operate on entire directories, not just individual files. If you have a specific command in mind, let me know!