[1.4.1] Using sh to recurse through file system?

[Gilles]

Hello

	To get rid of unneeded libraries, if any, I'd like to use the
scanelf application (www.gentoo.org/proj/en/hardened/pax-utils.xml)
and recurse from the root and check what shared libraries each
application needs.

According to $SHELL, I'm running "/bin/sh", which is a symlink to
busybox 1.4.1.

Is there a manual/tutorial on what this shell can do, especially
regarding while loops and calling an application?

Thank you.