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namespaces - overview of Linux namespaces http://man7.org/linux/man-pages/man7/namespaces.7.html
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mount_namespaces - overview of Linux mount namespaces
Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.
$ python -m SimpleHTTPServer 8000