It's a known fact that you cannot create hard links for directories.
My question is whether can one use
mount --bind dir1 dir2
instead of creating a hardlink of dir1 to dir2? which can't happen
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mount --bind you can make the same content (especially directories) appear in the file system twice.
For a very comprehensive article about this please see What is a bind mount? on unix.stackexchange.com
Most important points:
chrootby providing access to the
/devfile systems (see mount dev, proc, sys in a chroot environment? on superuser.com)
Unlike a hard link or symbolic link, a bind mount doesn't affect what is stored on the filesystem. It's a property of the live system.