Mounting $LFS/proc file system

In order for certain programs to function properly the proc file system must be mounted and available from within the chroot'ed environment as well. It's not a problem to mount the proc file system twice or even more than that, since it's a virtual file system maintained by the kernel itself.

The proc file system is mounted under $LFS/proc by running the following command:

mount proc $LFS/proc -t proc