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Each time I re-build my static pages, old directory and files which are no longer used are not removed.
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I'm not sure it is possible to keep track of old files....how can Links SQL know what is being used and what isn't?

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I found this out when I made about 200 categories in the root by mastake and spent a bit of time deleting them.
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shell> rm -r /path/to/pages/*

Takes about 2 seconds .