Is there an easy way to compare two directories for content (names only of subdirectories and files, not their identical content).
(1) "diff" compares the content of files: too strong a comparison;
(2) Could "find" both directories and then compare output, but this will list the entire content under any non-matching subdirectories, when all I need is the fact of the non-match.
(i.e. I need
diff -rq d1 d2 | sed ' /^Files /d'    OR    diff -rq d1 d2 | grep '^Only'
without the scrutiny of file content that diff provides.)
Thank you!
Fergus

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