"The unhide utility is available, at least, on recent releases
of Debian and Ubuntu. The Ruby script is available on Launchpad,
but it's not available in any of the recent releases yet. I'd
recommend grabbing both -- the legacy utility seems prone to false
positives. It may still be useful, but I'd have both just in case.
It's also unclear whether it's still under development -- the site
for the utility 404s now. Both are open source software, of
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