Question

Is there anyway to deny access to certain commands and executables while in a certain folder?

Specifically, I am trying to deny the access of pwd while in certain folders, so that users that access the folder via a symlink cannot see where in the file hierarchy they are (in order to prevent some security issues), but are able to use retain use everywhere else.

Answer 1

You can move pwd to another directory and make a script called pwd like this:
provided new location of real pwd is /path/to/movedpwd:

#!/bin/sh
if test /path/to/movedpwd = UNWANTED_DIR
then echo "Forbidden dir!"
else pwd fi
Then make it executable-only so that the users cannot find the real pwd.