Fix 'rmdir: failed to remove 'clash': Directory not empty' Error

This error occurs when you try to remove a directory using the 'rmdir' command, but the directory is not empty. In other words, it still contains files or subdirectories.

To remove the directory, you need to first delete all the files and subdirectories within it. You can do this using the 'rm' command with the '-r' option, which recursively deletes all files and subdirectories within a directory.

For example, to delete all files and subdirectories within the 'clash' directory, you can use the following command:

rm -r clash/*

Once all files and subdirectories have been deleted, you can then use the 'rmdir' command to remove the empty directory.

rmdir clash

This should successfully remove the directory without any errors.