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Removing Empty Files

Sometimes when comparing two directories, the first directory contains a file that the second directory does not. If you give diff the `-N' or `--new-file' option, it outputs a diff that deletes the contents of this file. By default, patch leaves an empty file after applying such a diff. The `-E' or `--remove-empty-files' option to patch deletes output files that are empty after applying the diff.


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