LinuxQuestions.org - K Ubuntu won`t start

I was trying to compile a program and had some problems and got the following error message "'/bin/sh: Can't open opp_makedep".
I did google and came across the following proposal. See below

a) Issue the following command to change the default shell to bash:
sudo rm /bin/sh
sudo ln -s /bin/bash /bin/sh

You can always return back to the original settings (make again
dash the default shell):
sudo rm /bin/sh
sudo ln -s /bin/bin /bin/bash

The good thing is that after entering the commands above I did successfully compile my program.
The bad thing is that I was running as root so I did not use the additional sudo command.

Later on when I did try to do other things I did get the following error message " unable to execute "bin/sh" for rc-default: too many levels of symbolic links".
I tried to restore my settings to /bin/sh but I didn`t know how.
I did restart my laptop but kunbuntu will not start as the following error message was again displayed
" unable to execute "bin/sh" for rc-default: too many levels of symbolic links"

Can anyone help me recover Kubuntu by restoring my settings to /bin/sh?
I still have the K Ubuntu start up CD.