Why did the rmdir command fail's that a directory bar exists. The command rmdir bar fails with the message that the directory is not empty. On running ls bar no files are displayed?

Why did the rmdir command fail's that a directory bar exists. The command rmdir bar fails with the message that the directory is not empty. On running ls bar no files are displayed?
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1 Answer

Answer :

This could mean that the directory named bar has hidden contents. Use ls -a bar to show all contents of bar.
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