Bash: how to copy directory's files if present
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In as script I have the statement 

    eval cp "$chapter"/subsections/* $temp/subsections

However, I am not sure there are actually files in "$chapter"/subsections/. As a consequence I get errors :

    cp: cannot stat `Commissioning/subsections/*': No such file or directory

Is there an option in cp to avoid complaints (I couldn't find any) ?

Is there a simple way to check existence of any file in a directory ? 