bindfs  -http://bindfs.org/-- Overview --bindfs is a FUSE filesystem for mirroring a directory to anotherdirectory, similarly to mount --bind. The permissions of the mirroreddirectory can be altered in various ways.Some things bindfs can be used for: - Making a directory read-only. - Making all executables non-executable. - Sharing a directory with a list of users (or groups). - Modifying permission bits using rules with chmod-like syntax. - Changing the permissions with which files are created.Non-root users can use almost all features, but most interestinguse-cases need user_allow_other to be defined in /etc/fuse.conf-- Installation --Make sure fuse 2.6.0 or above is installed (http://fuse.sf.net/).Then compile and install as usual:./configuremakemake installIf you want the mounts made by non-root users to be visible to other users,you may have to add the line user_allow_other to /etc/fuse.conf.-- Usage --See the bindfs --help or the man-page for instructions and examples.-- License --GNU General Public License version 2 or any later version.See the file COPYING.