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+<code>
+cd data/meta
+find -size 42c -name '*.meta' -exec rm -f {} \;
+find -size 2c -name '*.meta' -exec rm -f {} \;
+find -size 122c -name '*.meta' -exec rm -f {} \;
+find -depth -type d -empty -exec rmdir {} \;
+</code>